231977280 has 56 divisors (see below), whose sum is σ = 736530912. Its totient is φ = 61860352.

The previous prime is 231977269. The next prime is 231977323. The reversal of 231977280 is 82779132.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 119862 + ... + 121781.

Almost surely, 2^231977280 is an apocalyptic number.

231977280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231977280 is an abundant number, since it is smaller than the sum of its proper divisors (504553632).

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

231977280 is a wasteful number, since it uses less digits than its factorization.

231977280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241663 (or 241653 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 231977280 is about 15230.8003729285. The cubic root of 231977280 is about 614.4433061380.

The spelling of 231977280 in words is "two hundred thirty-one million, nine hundred seventy-seven thousand, two hundred eighty".