131401957 has 2 divisors, whose sum is σ = 131401958. Its totient is φ = 131401956.

The previous prime is 131401903. The next prime is 131401969. The reversal of 131401957 is 759104131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127215841 + 4186116 = 11279^2 + 2046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131401957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131401057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65700978 + 65700979.

It is an arithmetic number, because the mean of its divisors is an integer number (65700979).

Almost surely, 2^131401957 is an apocalyptic number.

It is an amenable number.

131401957 is a deficient number, since it is larger than the sum of its proper divisors (1).

131401957 is an equidigital number, since it uses as much as digits as its factorization.

131401957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 131401957 is about 11463.0692661259. The cubic root of 131401957 is about 508.3942278986.

The spelling of 131401957 in words is "one hundred thirty-one million, four hundred one thousand, nine hundred fifty-seven".