131496257 has 2 divisors, whose sum is σ = 131496258. Its totient is φ = 131496256.

The previous prime is 131496247. The next prime is 131496269. The reversal of 131496257 is 752694131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75186241 + 56310016 = 8671^2 + 7504^2 .

It is a cyclic number.

It is not a de Polignac number, because 131496257 - 2²² = 127301953 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131496257.

It is not a weakly prime, because it can be changed into another prime (131496217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65748128 + 65748129.

It is an arithmetic number, because the mean of its divisors is an integer number (65748129).

Almost surely, 2^131496257 is an apocalyptic number.

It is an amenable number.

131496257 is a deficient number, since it is larger than the sum of its proper divisors (1).

131496257 is an equidigital number, since it uses as much as digits as its factorization.

131496257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 131496257 is about 11467.1817374628. The cubic root of 131496257 is about 508.5158143981.

The spelling of 131496257 in words is "one hundred thirty-one million, four hundred ninety-six thousand, two hundred fifty-seven".