132691931 has 2 divisors, whose sum is σ = 132691932. Its totient is φ = 132691930.

The previous prime is 132691921. The next prime is 132691957. The reversal of 132691931 is 139196231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132691931 is a prime.

It is a super-2 number, since 2×132691931² = 35214297105017522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 132691891 and 132691900.

It is not a weakly prime, because it can be changed into another prime (132691921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66345965 + 66345966.

It is an arithmetic number, because the mean of its divisors is an integer number (66345966).

Almost surely, 2^132691931 is an apocalyptic number.

132691931 is a deficient number, since it is larger than the sum of its proper divisors (1).

132691931 is an equidigital number, since it uses as much as digits as its factorization.

132691931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 35.

The square root of 132691931 is about 11519.1983662059. The cubic root of 132691931 is about 510.0524500715.

It can be divided in two parts, 132691 and 931, that multiplied together give a palindrome (123535321).

The spelling of 132691931 in words is "one hundred thirty-two million, six hundred ninety-one thousand, nine hundred thirty-one".