13132991 has 2 divisors, whose sum is σ = 13132992. Its totient is φ = 13132990.

The previous prime is 13132981. The next prime is 13133011. The reversal of 13132991 is 19923131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13132991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13132901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6566495 + 6566496.

It is an arithmetic number, because the mean of its divisors is an integer number (6566496).

Almost surely, 2^13132991 is an apocalyptic number.

13132991 is a deficient number, since it is larger than the sum of its proper divisors (1).

13132991 is an equidigital number, since it uses as much as digits as its factorization.

13132991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458, while the sum is 29.

The square root of 13132991 is about 3623.9468815092. The cubic root of 13132991 is about 235.9325611673.

The spelling of 13132991 in words is "thirteen million, one hundred thirty-two thousand, nine hundred ninety-one".