13293431 has 2 divisors, whose sum is σ = 13293432. Its totient is φ = 13293430.

The previous prime is 13293421. The next prime is 13293443. The reversal of 13293431 is 13439231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13293431 is a prime.

It is a super-2 number, since 2×13293431² = 353430615503522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13293431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13293421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6646715 + 6646716.

It is an arithmetic number, because the mean of its divisors is an integer number (6646716).

Almost surely, 2^13293431 is an apocalyptic number.

13293431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13293431 is an equidigital number, since it uses as much as digits as its factorization.

13293431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 13293431 is about 3646.0157706735. The cubic root of 13293431 is about 236.8894366995.

The spelling of 13293431 in words is "thirteen million, two hundred ninety-three thousand, four hundred thirty-one".