231154564 has 6 divisors (see below), whose sum is σ = 404520494. Its totient is φ = 115577280.

The previous prime is 231154523. The next prime is 231154579. The reversal of 231154564 is 465451132.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 213160000 + 17994564 = 14600^2 + 4242^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28894317 + ... + 28894324.

Almost surely, 2^231154564 is an apocalyptic number.

It is an amenable number.

231154564 is a deficient number, since it is larger than the sum of its proper divisors (173365930).

231154564 is a wasteful number, since it uses less digits than its factorization.

231154564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57788645 (or 57788643 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 231154564 is about 15203.7680855767. The cubic root of 231154564 is about 613.7160637613.

The spelling of 231154564 in words is "two hundred thirty-one million, one hundred fifty-four thousand, five hundred sixty-four".