131125656 has 16 divisors (see below), whose sum is σ = 327814200. Its totient is φ = 43708544.

The previous prime is 131125651. The next prime is 131125681. The reversal of 131125656 is 656521131.

It is a super-2 number, since 2×131125656² = 34387875322860672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131125651) by changing a digit.

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, 2731761 + ... + 2731808.

Almost surely, 2^131125656 is an apocalyptic number.

It is an amenable number.

131125656 is an abundant number, since it is smaller than the sum of its proper divisors (196688544).

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

131125656 is a wasteful number, since it uses less digits than its factorization.

131125656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5463578 (or 5463574 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 131125656 is about 11451.0111343933. The cubic root of 131125656 is about 508.0376416194.

Adding to 131125656 its reverse (656521131), we get a palindrome (787646787).

The spelling of 131125656 in words is "one hundred thirty-one million, one hundred twenty-five thousand, six hundred fifty-six".