13431017231 has 2 divisors, whose sum is σ = 13431017232. Its totient is φ = 13431017230.

The previous prime is 13431017221. The next prime is 13431017261. The reversal of 13431017231 is 13271013431.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13431017231 - 2²⁶ = 13363908367 is a prime.

It is a super-2 number, since 2×13431017231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13431017231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13431017221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715508615 + 6715508616.

It is an arithmetic number, because the mean of its divisors is an integer number (6715508616).

Almost surely, 2^13431017231 is an apocalyptic number.

13431017231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13431017231 is an equidigital number, since it uses as much as digits as its factorization.

13431017231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The spelling of 13431017231 in words is "thirteen billion, four hundred thirty-one million, seventeen thousand, two hundred thirty-one".