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1231330300 = 225223535361
BaseRepresentation
bin100100101100100…
…1001101111111100
310011210222001121221
41021121021233330
510010210032200
6322103403124
742341064154
oct11131115774
93153861557
101231330300
11582065752
122a44534a4
13168143b15
14b9767764
157317891a
hex49649bfc

1231330300 has 36 divisors (see below), whose sum is σ = 2788165296. Its totient is φ = 471116800.

The previous prime is 1231330279. The next prime is 1231330301. The reversal of 1231330300 is 30331321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231330301) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 265381 + ... + 269980.

It is an arithmetic number, because the mean of its divisors is an integer number (77449036).

Almost surely, 21231330300 is an apocalyptic number.

1231330300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231330300 is an abundant number, since it is smaller than the sum of its proper divisors (1556834996).

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

1231330300 is a wasteful number, since it uses less digits than its factorization.

1231330300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535398 (or 535391 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 1231330300 is about 35090.3163280128. The cubic root of 1231330300 is about 1071.8274010658.

Adding to 1231330300 its reverse (30331321), we get a palindrome (1261661621).

The spelling of 1231330300 in words is "one billion, two hundred thirty-one million, three hundred thirty thousand, three hundred".

Divisors: 1 2 4 5 10 20 23 25 46 50 92 100 115 230 460 575 1150 2300 535361 1070722 2141444 2676805 5353610 10707220 12313303 13384025 24626606 26768050 49253212 53536100 61566515 123133030 246266060 307832575 615665150 1231330300