13997334431 has 2 divisors, whose sum is σ = 13997334432. Its totient is φ = 13997334430.

The previous prime is 13997334419. The next prime is 13997334509. The reversal of 13997334431 is 13443379931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13997334431 - 2¹⁰ = 13997333407 is a prime.

It is a super-2 number, since 2×13997334431² (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 (13997334401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6998667215 + 6998667216.

It is an arithmetic number, because the mean of its divisors is an integer number (6998667216).

Almost surely, 2^13997334431 is an apocalyptic number.

13997334431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13997334431 is an equidigital number, since it uses as much as digits as its factorization.

13997334431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 47.

The spelling of 13997334431 in words is "thirteen billion, nine hundred ninety-seven million, three hundred thirty-four thousand, four hundred thirty-one".