231916356 has 72 divisors (see below), whose sum is σ = 705257280. Its totient is φ = 62773056.

The previous prime is 231916273. The next prime is 231916379. The reversal of 231916356 is 653619132.

231916356 is a `hidden beast` number, since 2 + 3 + 19 + 1 + 635 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 231916356.

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 23 ways as a sum of consecutive naturals, for example, 19431 + ... + 29006.

It is an arithmetic number, because the mean of its divisors is an integer number (9795240).

Almost surely, 2^231916356 is an apocalyptic number.

It is an amenable number.

231916356 is an abundant number, since it is smaller than the sum of its proper divisors (473340924).

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

231916356 is a wasteful number, since it uses less digits than its factorization.

231916356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48473 (or 48468 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 231916356 is about 15228.8002153814. The cubic root of 231916356 is about 614.3895111837.

The spelling of 231916356 in words is "two hundred thirty-one million, nine hundred sixteen thousand, three hundred fifty-six".