163131572 has 12 divisors (see below), whose sum is σ = 286976256. Its totient is φ = 81138360.

The previous prime is 163131569. The next prime is 163131613. The reversal of 163131572 is 275131361.

163131572 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163131572² = 53223819566382368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 105998 + ... + 107525.

It is an arithmetic number, because the mean of its divisors is an integer number (23914688).

Almost surely, 2^163131572 is an apocalyptic number.

It is an amenable number.

163131572 is a deficient number, since it is larger than the sum of its proper divisors (123844684).

163131572 is a wasteful number, since it uses less digits than its factorization.

163131572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213718 (or 213716 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 163131572 is about 12772.2970526057. The cubic root of 163131572 is about 546.4024949742.

The spelling of 163131572 in words is "one hundred sixty-three million, one hundred thirty-one thousand, five hundred seventy-two".