231073136 has 40 divisors (see below), whose sum is σ = 538596480. Its totient is φ = 93818304.

The previous prime is 231073049. The next prime is 231073147. The reversal of 231073136 is 631370132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52166 + ... + 56421.

It is an arithmetic number, because the mean of its divisors is an integer number (13464912).

Almost surely, 2^231073136 is an apocalyptic number.

It is an amenable number.

231073136 is an abundant number, since it is smaller than the sum of its proper divisors (307523344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231073136 is a wasteful number, since it uses less digits than its factorization.

231073136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108621 (or 108615 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 231073136 is about 15201.0899609206. The cubic root of 231073136 is about 613.6439914360.

The spelling of 231073136 in words is "two hundred thirty-one million, seventy-three thousand, one hundred thirty-six".