13231232291 has 2 divisors, whose sum is σ = 13231232292. Its totient is φ = 13231232290.

The previous prime is 13231232269. The next prime is 13231232297. The reversal of 13231232291 is 19223213231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231232291 is a prime.

It is a super-2 number, since 2×13231232291² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13231232297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615616145 + 6615616146.

It is an arithmetic number, because the mean of its divisors is an integer number (6615616146).

Almost surely, 2^13231232291 is an apocalyptic number.

13231232291 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231232291 is an equidigital number, since it uses as much as digits as its factorization.

13231232291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The spelling of 13231232291 in words is "thirteen billion, two hundred thirty-one million, two hundred thirty-two thousand, two hundred ninety-one".