231164280 has 80 divisors (see below), whose sum is σ = 776979720. Its totient is φ = 61642944.

The previous prime is 231164261. The next prime is 231164281. The reversal of 231164280 is 82461132.

231164280 is a `hidden beast` number, since 2 + 3 + 11 + 642 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231164281) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32434 + ... + 38913.

Almost surely, 2^231164280 is an apocalyptic number.

231164280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231164280 is an abundant number, since it is smaller than the sum of its proper divisors (545815440).

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

231164280 is a wasteful number, since it uses less digits than its factorization.

231164280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71370 (or 71357 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 231164280 is about 15204.0876082717. The cubic root of 231164280 is about 613.7246623106.

The spelling of 231164280 in words is "two hundred thirty-one million, one hundred sixty-four thousand, two hundred eighty".