13396666831 has 2 divisors, whose sum is σ = 13396666832. Its totient is φ = 13396666830.

The previous prime is 13396666769. The next prime is 13396666837. The reversal of 13396666831 is 13866669331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13396666831 is a prime.

It is a super-2 number, since 2×13396666831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13396666837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6698333415 + 6698333416.

It is an arithmetic number, because the mean of its divisors is an integer number (6698333416).

Almost surely, 2^13396666831 is an apocalyptic number.

13396666831 is a deficient number, since it is larger than the sum of its proper divisors (1).

13396666831 is an equidigital number, since it uses as much as digits as its factorization.

13396666831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 52.

The spelling of 13396666831 in words is "thirteen billion, three hundred ninety-six million, six hundred sixty-six thousand, eight hundred thirty-one".