131951168 has 28 divisors (see below), whose sum is σ = 262615680. Its totient is φ = 65780352.

The previous prime is 131951123. The next prime is 131951173. The reversal of 131951168 is 861159131.

It is a happy number.

It is a Cunningham number, because it is equal to 11487²-1.

It is a super-2 number, since 2×131951168² = 34822221473128448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20105 + ... + 25847.

Almost surely, 2^131951168 is an apocalyptic number.

It is an amenable number.

131951168 is a deficient number, since it is larger than the sum of its proper divisors (130664512).

131951168 is an equidigital number, since it uses as much as digits as its factorization.

131951168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114 (or 6104 counting only the distinct ones).

The product of its digits is 6480, while the sum is 35.

The square root of 131951168 is about 11486.9999564725. Note that the first 4 decimals coincide. The cubic root of 131951168 is about 509.1015425732.

The spelling of 131951168 in words is "one hundred thirty-one million, nine hundred fifty-one thousand, one hundred sixty-eight".