131456656 has 20 divisors (see below), whose sum is σ = 254946604. Its totient is φ = 65664000.

The previous prime is 131456621. The next prime is 131456657. The reversal of 131456656 is 656654131.

It can be written as a sum of positive squares in 2 ways, for example, as 35808256 + 95648400 = 5984^2 + 9780^2 .

It is not an unprimeable number, because it can be changed into a prime (131456657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15796 + ... + 22636.

Almost surely, 2^131456656 is an apocalyptic number.

131456656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131456656 is a deficient number, since it is larger than the sum of its proper divisors (123489948).

131456656 is a wasteful number, since it uses less digits than its factorization.

131456656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050 (or 8044 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 131456656 is about 11465.4548972119. The cubic root of 131456656 is about 508.4647615973.

It can be divided in two parts, 1314 and 56656, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 131456656 in words is "one hundred thirty-one million, four hundred fifty-six thousand, six hundred fifty-six".