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1302230031 = 323101918521
BaseRepresentation
bin100110110011110…
…0111010000001111
310100202101010202220
41031213213100033
510131332330111
6333115150423
744161526004
oct11547472017
93322333686
101302230031
11609090773
12304145413
13179a3901b
14c4d418ab
15794d0e06
hex4d9e740f

1302230031 has 16 divisors (see below), whose sum is σ = 1813674240. Its totient is φ = 829547840.

The previous prime is 1302230029. The next prime is 1302230047. The reversal of 1302230031 is 1300322031.

It is a cyclic number.

It is not a de Polignac number, because 1302230031 - 21 = 1302230029 is a prime.

It is a super-2 number, since 2×13022300312 = 3391606107276521922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302230011) 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 15 ways as a sum of consecutive naturals, for example, 61051 + ... + 79571.

It is an arithmetic number, because the mean of its divisors is an integer number (113354640).

Almost surely, 21302230031 is an apocalyptic number.

1302230031 is a deficient number, since it is larger than the sum of its proper divisors (511444209).

1302230031 is a wasteful number, since it uses less digits than its factorization.

1302230031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19566.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1302230031 is about 36086.4244695980. The cubic root of 1302230031 is about 1092.0165880895.

Adding to 1302230031 its reverse (1300322031), we get a palindrome (2602552062).

The spelling of 1302230031 in words is "one billion, three hundred two million, two hundred thirty thousand, thirty-one".

Divisors: 1 3 23 69 1019 3057 18521 23437 55563 70311 425983 1277949 18872899 56618697 434076677 1302230031