231110513988 has 24 divisors (see below), whose sum is σ = 551798747808. Its totient is φ = 75245283456.

The previous prime is 231110513987. The next prime is 231110514017. The reversal of 231110513988 is 889315011132.

It is not an unprimeable number, because it can be changed into a prime (231110513987) 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, 223943781 + ... + 223944812.

It is an arithmetic number, because the mean of its divisors is an integer number (22991614492).

Almost surely, 2^231110513988 is an apocalyptic number.

It is an amenable number.

231110513988 is an abundant number, since it is smaller than the sum of its proper divisors (320688233820).

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

231110513988 is a wasteful number, since it uses less digits than its factorization.

231110513988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447888643 (or 447888641 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 231110513988 in words is "two hundred thirty-one billion, one hundred ten million, five hundred thirteen thousand, nine hundred eighty-eight".