231513450031992 has 128 divisors (see below), whose sum is σ = 648481175976960. Its totient is φ = 68495267850240.

The previous prime is 231513450031967. The next prime is 231513450031993. The reversal of 231513450031992 is 299130054315132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231513450031993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173073763 + ... + 174406290.

It is an arithmetic number, because the mean of its divisors is an integer number (5066259187320).

Almost surely, 2^{231513450031992} is an apocalyptic number.

It is an amenable number.

231513450031992 is an abundant number, since it is smaller than the sum of its proper divisors (416967725944968).

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

231513450031992 is a wasteful number, since it uses less digits than its factorization.

231513450031992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347480173 (or 347480169 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 48.

The spelling of 231513450031992 in words is "two hundred thirty-one trillion, five hundred thirteen billion, four hundred fifty million, thirty-one thousand, nine hundred ninety-two".