231431616012 has 24 divisors (see below), whose sum is σ = 540058026816. Its totient is φ = 77136597328.

The previous prime is 231431615983. The next prime is 231431616019. The reversal of 231431616012 is 210616134132.

It is not an unprimeable number, because it can be changed into a prime (231431616019) 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, 775998 + ... + 1032005.

It is an arithmetic number, because the mean of its divisors is an integer number (22502417784).

Almost surely, 2^231431616012 is an apocalyptic number.

It is an amenable number.

231431616012 is an abundant number, since it is smaller than the sum of its proper divisors (308626410804).

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

231431616012 is a wasteful number, since it uses less digits than its factorization.

231431616012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818677 (or 1818675 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 231431616012 in words is "two hundred thirty-one billion, four hundred thirty-one million, six hundred sixteen thousand, twelve".