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10031238612 = 223430960613
BaseRepresentation
bin10010101011110100…
…01000110111010100
3221220002112201110000
421111322020313110
5131020444113422
64335220131300
7503404056423
oct112572106724
927802481400
1010031238612
11428841104a
121b3b536b30
13c3b307165
146b23752ba
153da9cdcac
hex255e88dd4

10031238612 has 30 divisors (see below), whose sum is σ = 26223640058. Its totient is φ = 3343746096.

The previous prime is 10031238611. The next prime is 10031238619. The reversal of 10031238612 is 21683213001.

It is a happy number.

10031238612 is a `hidden beast` number, since 1 + 0 + 0 + 3 + 12 + 38 + 612 = 666.

10031238612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5335425936 + 4695812676 = 73044^2 + 68526^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031238611) 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 9 ways as a sum of consecutive naturals, for example, 15479983 + ... + 15480630.

Almost surely, 210031238612 is an apocalyptic number.

10031238612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10031238612 is an abundant number, since it is smaller than the sum of its proper divisors (16192401446).

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

10031238612 is a wasteful number, since it uses less digits than its factorization.

10031238612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30960629 (or 30960618 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 10031238612 in words is "ten billion, thirty-one million, two hundred thirty-eight thousand, six hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 30960613 61921226 92881839 123842452 185763678 278645517 371527356 557291034 835936551 1114582068 1671873102 2507809653 3343746204 5015619306 10031238612