231115580 has 24 divisors (see below), whose sum is σ = 493301760. Its totient is φ = 90930240.

The previous prime is 231115559. The next prime is 231115609. The reversal of 231115580 is 85511132.

It is a happy number.

It is a super-2 number, since 2×231115580² = 106828822637472800, which contains 22 as substring.

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, 93500 + ... + 95939.

It is an arithmetic number, because the mean of its divisors is an integer number (20554240).

Almost surely, 2^231115580 is an apocalyptic number.

231115580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231115580 is an abundant number, since it is smaller than the sum of its proper divisors (262186180).

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

231115580 is a wasteful number, since it uses less digits than its factorization.

231115580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189509 (or 189507 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 231115580 is about 15202.4859809177. The cubic root of 231115580 is about 613.6815609424.

The spelling of 231115580 in words is "two hundred thirty-one million, one hundred fifteen thousand, five hundred eighty".