131403956 has 6 divisors (see below), whose sum is σ = 229956930. Its totient is φ = 65701976.

The previous prime is 131403953. The next prime is 131403977. The reversal of 131403956 is 659304131.

It can be written as a sum of positive squares in only one way, i.e., 83101456 + 48302500 = 9116^2 + 6950^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131403953) 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 as a sum of consecutive naturals, namely, 16425491 + ... + 16425498.

It is an arithmetic number, because the mean of its divisors is an integer number (38326155).

Almost surely, 2^131403956 is an apocalyptic number.

It is an amenable number.

131403956 is a deficient number, since it is larger than the sum of its proper divisors (98552974).

131403956 is a wasteful number, since it uses less digits than its factorization.

131403956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32850993 (or 32850991 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 131403956 is about 11463.1564588468. The cubic root of 131403956 is about 508.3968059295.

The spelling of 131403956 in words is "one hundred thirty-one million, four hundred three thousand, nine hundred fifty-six".