131332657 has 2 divisors, whose sum is σ = 131332658. Its totient is φ = 131332656.

The previous prime is 131332639. The next prime is 131332673. The reversal of 131332657 is 756233131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127328656 + 4004001 = 11284^2 + 2001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131332657 is a prime.

It is not a weakly prime, because it can be changed into another prime (131332697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666328 + 65666329.

It is an arithmetic number, because the mean of its divisors is an integer number (65666329).

Almost surely, 2^131332657 is an apocalyptic number.

It is an amenable number.

131332657 is a deficient number, since it is larger than the sum of its proper divisors (1).

131332657 is an equidigital number, since it uses as much as digits as its factorization.

131332657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 31.

The square root of 131332657 is about 11460.0461168357. The cubic root of 131332657 is about 508.3048382725.

Adding to 131332657 its reverse (756233131), we get a palindrome (887565788).

The spelling of 131332657 in words is "one hundred thirty-one million, three hundred thirty-two thousand, six hundred fifty-seven".