16131172 has 6 divisors (see below), whose sum is σ = 28229558. Its totient is φ = 8065584.

The previous prime is 16131169. The next prime is 16131217. The reversal of 16131172 is 27113161.

It can be written as a sum of positive squares in only one way, i.e., 16128256 + 2916 = 4016^2 + 54^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2016393 + ... + 2016400.

Almost surely, 2^16131172 is an apocalyptic number.

It is an amenable number.

16131172 is a deficient number, since it is larger than the sum of its proper divisors (12098386).

16131172 is a wasteful number, since it uses less digits than its factorization.

16131172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032797 (or 4032795 counting only the distinct ones).

The product of its digits is 252, while the sum is 22.

The square root of 16131172 is about 4016.3630314004. The cubic root of 16131172 is about 252.6709465545.

The spelling of 16131172 in words is "sixteen million, one hundred thirty-one thousand, one hundred seventy-two".