13400626231 has 2 divisors, whose sum is σ = 13400626232. Its totient is φ = 13400626230.

The previous prime is 13400626207. The next prime is 13400626241. The reversal of 13400626231 is 13262600431.

It is a strong prime.

It is an emirp because it is prime and its reverse (13262600431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13400626231 - 2²⁵ = 13367071799 is a prime.

It is a super-2 number, since 2×13400626231² (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 13400626231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13400626241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700313115 + 6700313116.

It is an arithmetic number, because the mean of its divisors is an integer number (6700313116).

Almost surely, 2^13400626231 is an apocalyptic number.

13400626231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13400626231 is an equidigital number, since it uses as much as digits as its factorization.

13400626231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 13400626231 in words is "thirteen billion, four hundred million, six hundred twenty-six thousand, two hundred thirty-one".