231564134 has 16 divisors (see below), whose sum is σ = 366191280. Its totient is φ = 109519200.

The previous prime is 231564119. The next prime is 231564139. The reversal of 231564134 is 431465132.

It is a junction number, because it is equal to n+sod(n) for n = 231564097 and 231564106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231564139) 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, 22292 + ... + 30984.

It is an arithmetic number, because the mean of its divisors is an integer number (22886955).

Almost surely, 2^231564134 is an apocalyptic number.

231564134 is a deficient number, since it is larger than the sum of its proper divisors (134627146).

231564134 is a wasteful number, since it uses less digits than its factorization.

231564134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9415.

The product of its digits is 8640, while the sum is 29.

The square root of 231564134 is about 15217.2314827632. The cubic root of 231564134 is about 614.0783197529.

The spelling of 231564134 in words is "two hundred thirty-one million, five hundred sixty-four thousand, one hundred thirty-four".