231811396 has 12 divisors (see below), whose sum is σ = 405909952. Its totient is φ = 115837128.

The previous prime is 231811387. The next prime is 231811403. The reversal of 231811396 is 693118132.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9120 + ... + 23383.

Almost surely, 2^231811396 is an apocalyptic number.

It is an amenable number.

231811396 is a deficient number, since it is larger than the sum of its proper divisors (174098556).

231811396 is a wasteful number, since it uses less digits than its factorization.

231811396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34290 (or 34288 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 231811396 is about 15225.3537233130. The cubic root of 231811396 is about 614.2968110180.

The spelling of 231811396 in words is "two hundred thirty-one million, eight hundred eleven thousand, three hundred ninety-six".