231072040 has 32 divisors (see below), whose sum is σ = 521136000. Its totient is φ = 92211264.

The previous prime is 231072019. The next prime is 231072073. The reversal of 231072040 is 40270132.

It is a junction number, because it is equal to n+sod(n) for n = 231071999 and 231072017.

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, 10981 + ... + 24139.

It is an arithmetic number, because the mean of its divisors is an integer number (16285500).

Almost surely, 2^231072040 is an apocalyptic number.

231072040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231072040 is an abundant number, since it is smaller than the sum of its proper divisors (290063960).

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

231072040 is a wasteful number, since it uses less digits than its factorization.

231072040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13609 (or 13605 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 231072040 is about 15201.0539108313. The cubic root of 231072040 is about 613.6430212455.

The spelling of 231072040 in words is "two hundred thirty-one million, seventy-two thousand, forty".