131969659 has 2 divisors, whose sum is σ = 131969660. Its totient is φ = 131969658.

The previous prime is 131969597. The next prime is 131969681. The reversal of 131969659 is 956969131.

It is a strong prime.

It is an emirp because it is prime and its reverse (956969131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131969659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131969359) 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, 65984829 + 65984830.

It is an arithmetic number, because the mean of its divisors is an integer number (65984830).

Almost surely, 2^131969659 is an apocalyptic number.

131969659 is a deficient number, since it is larger than the sum of its proper divisors (1).

131969659 is an equidigital number, since it uses as much as digits as its factorization.

131969659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393660, while the sum is 49.

The square root of 131969659 is about 11487.8047946507. The cubic root of 131969659 is about 509.1253224737.

The spelling of 131969659 in words is "one hundred thirty-one million, nine hundred sixty-nine thousand, six hundred fifty-nine".