136331957 has 2 divisors, whose sum is σ = 136331958. Its totient is φ = 136331956.

The previous prime is 136331947. The next prime is 136331981. The reversal of 136331957 is 759133631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136212241 + 119716 = 11671^2 + 346^2 .

It is an emirp because it is prime and its reverse (759133631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136331957 - 2⁴ = 136331941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136331957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136331917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68165978 + 68165979.

It is an arithmetic number, because the mean of its divisors is an integer number (68165979).

Almost surely, 2^136331957 is an apocalyptic number.

It is an amenable number.

136331957 is a deficient number, since it is larger than the sum of its proper divisors (1).

136331957 is an equidigital number, since it uses as much as digits as its factorization.

136331957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 38.

The square root of 136331957 is about 11676.1276543210. The cubic root of 136331957 is about 514.6743874423.

The spelling of 136331957 in words is "one hundred thirty-six million, three hundred thirty-one thousand, nine hundred fifty-seven".