231507368 has 8 divisors (see below), whose sum is σ = 434076330. Its totient is φ = 115753680.

The previous prime is 231507337. The next prime is 231507371. The reversal of 231507368 is 863705132.

It can be written as a sum of positive squares in only one way, i.e., 206726884 + 24780484 = 14378^2 + 4978^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×231507368² = 107191322876574848, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 14469203 + ... + 14469218.

Almost surely, 2^231507368 is an apocalyptic number.

It is an amenable number.

231507368 is a deficient number, since it is larger than the sum of its proper divisors (202568962).

231507368 is a wasteful number, since it uses less digits than its factorization.

231507368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28938427 (or 28938423 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 231507368 is about 15215.3661802797. The cubic root of 231507368 is about 614.0281369402.

The spelling of 231507368 in words is "two hundred thirty-one million, five hundred seven thousand, three hundred sixty-eight".