131395877 has 2 divisors, whose sum is σ = 131395878. Its totient is φ = 131395876.

The previous prime is 131395861. The next prime is 131395883. The reversal of 131395877 is 778593131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128006596 + 3389281 = 11314^2 + 1841^2 .

It is a cyclic number.

It is not a de Polignac number, because 131395877 - 2⁴ = 131395861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131395477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65697938 + 65697939.

It is an arithmetic number, because the mean of its divisors is an integer number (65697939).

Almost surely, 2^131395877 is an apocalyptic number.

It is an amenable number.

131395877 is a deficient number, since it is larger than the sum of its proper divisors (1).

131395877 is an equidigital number, since it uses as much as digits as its factorization.

131395877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 131395877 is about 11462.8040635789. The cubic root of 131395877 is about 508.3863866035.

The spelling of 131395877 in words is "one hundred thirty-one million, three hundred ninety-five thousand, eight hundred seventy-seven".