231745855 has 12 divisors (see below), whose sum is σ = 305675496. Its totient is φ = 168542000.

The previous prime is 231745823. The next prime is 231745883. The reversal of 231745855 is 558547132.

It is not a de Polignac number, because 231745855 - 2⁵ = 231745823 is a prime.

It is a super-2 number, since 2×231745855² = 107412282619362050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190921 + ... + 192130.

It is an arithmetic number, because the mean of its divisors is an integer number (25472958).

Almost surely, 2^231745855 is an apocalyptic number.

231745855 is a deficient number, since it is larger than the sum of its proper divisors (73929641).

231745855 is a wasteful number, since it uses less digits than its factorization.

231745855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383078 (or 383067 counting only the distinct ones).

The product of its digits is 168000, while the sum is 40.

The square root of 231745855 is about 15223.2012073677. The cubic root of 231745855 is about 614.2389113302.

The spelling of 231745855 in words is "two hundred thirty-one million, seven hundred forty-five thousand, eight hundred fifty-five".