231397728874 has 32 divisors (see below), whose sum is σ = 374620780800. Its totient is φ = 106563600000.

The previous prime is 231397728869. The next prime is 231397728959. The reversal of 231397728874 is 478827793132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46735099 + ... + 46740049.

It is an arithmetic number, because the mean of its divisors is an integer number (11706899400).

Almost surely, 2^231397728874 is an apocalyptic number.

231397728874 is a deficient number, since it is larger than the sum of its proper divisors (143223051926).

231397728874 is a wasteful number, since it uses less digits than its factorization.

231397728874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8566.

The product of its digits is 28449792, while the sum is 61.

The spelling of 231397728874 in words is "two hundred thirty-one billion, three hundred ninety-seven million, seven hundred twenty-eight thousand, eight hundred seventy-four".