[go: up one dir, main page]

Search a number
-
+
1312323420 = 223523950959
BaseRepresentation
bin100111000111000…
…0111011101011100
310101110100221022010
41032032013131130
510141423322140
6334115351220
744343364542
oct11616073534
93343327263
101312323420
11613855011
123075b2510
1317bb61245
14c640bd92
157a326880
hex4e38775c

1312323420 has 48 divisors (see below), whose sum is σ = 3834270720. Its totient is φ = 334737216.

The previous prime is 1312323361. The next prime is 1312323433. The reversal of 1312323420 is 243232131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474100 + ... + 476859.

It is an arithmetic number, because the mean of its divisors is an integer number (79880640).

Almost surely, 21312323420 is an apocalyptic number.

1312323420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312323420 is an abundant number, since it is smaller than the sum of its proper divisors (2521947300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312323420 is a wasteful number, since it uses less digits than its factorization.

1312323420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950994 (or 950992 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1312323420 is about 36226.0047479708. The cubic root of 1312323420 is about 1094.8306821038.

Adding to 1312323420 its reverse (243232131), we get a palindrome (1555555551).

The spelling of 1312323420 in words is "one billion, three hundred twelve million, three hundred twenty-three thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 23 30 46 60 69 92 115 138 230 276 345 460 690 1380 950959 1901918 2852877 3803836 4754795 5705754 9509590 11411508 14264385 19019180 21872057 28528770 43744114 57057540 65616171 87488228 109360285 131232342 218720570 262464684 328080855 437441140 656161710 1312323420