231378874 has 16 divisors (see below), whose sum is σ = 367972200. Its totient is φ = 108739584.

The previous prime is 231378869. The next prime is 231378883. The reversal of 231378874 is 478873132.

It can be written as a sum of positive squares in 4 ways, for example, as 184552225 + 46826649 = 13585^2 + 6843^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231378874.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24082 + ... + 32290.

Almost surely, 2^231378874 is an apocalyptic number.

231378874 is a deficient number, since it is larger than the sum of its proper divisors (136593326).

231378874 is a wasteful number, since it uses less digits than its factorization.

231378874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9057.

The product of its digits is 225792, while the sum is 43.

The square root of 231378874 is about 15211.1430865665. The cubic root of 231378874 is about 613.9145141590.

The spelling of 231378874 in words is "two hundred thirty-one million, three hundred seventy-eight thousand, eight hundred seventy-four".