136131657 has 4 divisors (see below), whose sum is σ = 181508880. Its totient is φ = 90754436.

The previous prime is 136131649. The next prime is 136131659. The reversal of 136131657 is 756131631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 756131631 = 3 ⋅252043877.

It is a cyclic number.

It is not a de Polignac number, because 136131657 - 2³ = 136131649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136131659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22688607 + ... + 22688612.

It is an arithmetic number, because the mean of its divisors is an integer number (45377220).

Almost surely, 2^136131657 is an apocalyptic number.

It is an amenable number.

136131657 is a deficient number, since it is larger than the sum of its proper divisors (45377223).

136131657 is an equidigital number, since it uses as much as digits as its factorization.

136131657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45377222.

The product of its digits is 11340, while the sum is 33.

The square root of 136131657 is about 11667.5471715352. The cubic root of 136131657 is about 514.4222093278.

The spelling of 136131657 in words is "one hundred thirty-six million, one hundred thirty-one thousand, six hundred fifty-seven".