13131431122399 has 16 divisors (see below), whose sum is σ = 13934879115840. Its totient is φ = 12331457349120.

The previous prime is 13131431122391. The next prime is 13131431122441. The reversal of 13131431122399 is 99322113413131.

It is a cyclic number.

It is not a de Polignac number, because 13131431122399 - 2³ = 13131431122391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131431122391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14295409 + ... + 15186229.

It is an arithmetic number, because the mean of its divisors is an integer number (870929944740).

Almost surely, 2^{13131431122399} is an apocalyptic number.

13131431122399 is a deficient number, since it is larger than the sum of its proper divisors (803447993441).

13131431122399 is a wasteful number, since it uses less digits than its factorization.

13131431122399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892770.

The product of its digits is 104976, while the sum is 43.

The spelling of 13131431122399 in words is "thirteen trillion, one hundred thirty-one billion, four hundred thirty-one million, one hundred twenty-two thousand, three hundred ninety-nine".