231302130012 has 30 divisors (see below), whose sum is σ = 604669458008. Its totient is φ = 77100709896.

The previous prime is 231302130001. The next prime is 231302130019. The reversal of 231302130012 is 210031203132.

231302130012 is a `hidden beast` number, since 231 + 302 + 130 + 0 + 1 + 2 = 666.

It is a super-2 number, since 2×231302130012² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231302130019) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 356947408 + ... + 356948055.

Almost surely, 2^231302130012 is an apocalyptic number.

It is an amenable number.

231302130012 is an abundant number, since it is smaller than the sum of its proper divisors (373367327996).

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

231302130012 is a wasteful number, since it uses less digits than its factorization.

231302130012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713895479 (or 713895468 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231302130012 its reverse (210031203132), we get a palindrome (441333333144).

The spelling of 231302130012 in words is "two hundred thirty-one billion, three hundred two million, one hundred thirty thousand, twelve".