13431797 has 2 divisors, whose sum is σ = 13431798. Its totient is φ = 13431796.

The previous prime is 13431787. The next prime is 13431811. The reversal of 13431797 is 79713431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7890481 + 5541316 = 2809^2 + 2354^2 .

It is a cyclic number.

It is not a de Polignac number, because 13431797 - 2⁸ = 13431541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13431757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715898 + 6715899.

It is an arithmetic number, because the mean of its divisors is an integer number (6715899).

Almost surely, 2^13431797 is an apocalyptic number.

It is an amenable number.

13431797 is a deficient number, since it is larger than the sum of its proper divisors (1).

13431797 is an equidigital number, since it uses as much as digits as its factorization.

13431797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 35.

The square root of 13431797 is about 3664.9416093575. The cubic root of 13431797 is about 237.7084972426.

The spelling of 13431797 in words is "thirteen million, four hundred thirty-one thousand, seven hundred ninety-seven".