131357477 has 2 divisors, whose sum is σ = 131357478. Its totient is φ = 131357476.

The previous prime is 131357459. The next prime is 131357489. The reversal of 131357477 is 774753131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94984516 + 36372961 = 9746^2 + 6031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131357477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131357477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131357077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65678738 + 65678739.

It is an arithmetic number, because the mean of its divisors is an integer number (65678739).

Almost surely, 2^131357477 is an apocalyptic number.

It is an amenable number.

131357477 is a deficient number, since it is larger than the sum of its proper divisors (1).

131357477 is an equidigital number, since it uses as much as digits as its factorization.

131357477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61740, while the sum is 38.

The square root of 131357477 is about 11461.1289583531. The cubic root of 131357477 is about 508.3368570451.

The spelling of 131357477 in words is "one hundred thirty-one million, three hundred fifty-seven thousand, four hundred seventy-seven".