231301311312 has 40 divisors (see below), whose sum is σ = 610241763456. Its totient is φ = 75460001536.

The previous prime is 231301311301. The next prime is 231301311317. The reversal of 231301311312 is 213113103132.

It is a happy number.

It is a super-2 number, since 2×231301311312² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231301311317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51261333 + ... + 51265844.

Almost surely, 2^231301311312 is an apocalyptic number.

It is an amenable number.

231301311312 is an abundant number, since it is smaller than the sum of its proper divisors (378940452144).

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

231301311312 is a wasteful number, since it uses less digits than its factorization.

231301311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102527235 (or 102527229 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 231301311312 its reverse (213113103132), we get a palindrome (444414414444).

The spelling of 231301311312 in words is "two hundred thirty-one billion, three hundred one million, three hundred eleven thousand, three hundred twelve".