231328293156 has 81 divisors (see below), whose sum is σ = 617288759451. Its totient is φ = 73033725168.

The previous prime is 231328293143. The next prime is 231328293167. The reversal of 231328293156 is 651392823132.

The square root of 231328293156 is 480966.

It is a perfect power (a square), and thus also a powerful number.

231328293156 is a `hidden beast` number, since 2 + 3 + 1 + 328 + 2 + 9 + 315 + 6 = 666.

231328293156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 54828015 + ... + 54832233.

Almost surely, 2^231328293156 is an apocalyptic number.

231328293156 is the 480966-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231328293156

231328293156 is an abundant number, since it is smaller than the sum of its proper divisors (385960466295).

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

231328293156 is an equidigital number, since it uses as much as digits as its factorization.

231328293156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8486 (or 4243 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The spelling of 231328293156 in words is "two hundred thirty-one billion, three hundred twenty-eight million, two hundred ninety-three thousand, one hundred fifty-six".