231157960 has 32 divisors (see below), whose sum is σ = 567388800. Its totient is φ = 84057280.

The previous prime is 231157951. The next prime is 231157967. The reversal of 231157960 is 69751132.

It is not an unprimeable number, because it can be changed into a prime (231157967) by changing a digit.

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, 262240 + ... + 263119.

It is an arithmetic number, because the mean of its divisors is an integer number (17730900).

Almost surely, 2^231157960 is an apocalyptic number.

231157960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231157960 is an abundant number, since it is smaller than the sum of its proper divisors (336230840).

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

231157960 is a wasteful number, since it uses less digits than its factorization.

231157960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525381 (or 525377 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 231157960 is about 15203.8797680066. The cubic root of 231157960 is about 613.7190692100.

The spelling of 231157960 in words is "two hundred thirty-one million, one hundred fifty-seven thousand, nine hundred sixty".