231056660 has 12 divisors (see below), whose sum is σ = 485219028. Its totient is φ = 92422656.

The previous prime is 231056641. The next prime is 231056677. The reversal of 231056660 is 66650132.

It can be written as a sum of positive squares in 2 ways, for example, as 122855056 + 108201604 = 11084^2 + 10402^2 .

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 3 ways as a sum of consecutive naturals, for example, 5776397 + ... + 5776436.

It is an arithmetic number, because the mean of its divisors is an integer number (40434919).

Almost surely, 2^231056660 is an apocalyptic number.

231056660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231056660 is an abundant number, since it is smaller than the sum of its proper divisors (254162368).

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

231056660 is a wasteful number, since it uses less digits than its factorization.

231056660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11552842 (or 11552840 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 231056660 is about 15200.5480164368. The cubic root of 231056660 is about 613.6294063874.

The spelling of 231056660 in words is "two hundred thirty-one million, fifty-six thousand, six hundred sixty".