13129884431 has 12 divisors (see below), whose sum is σ = 14672444112. Its totient is φ = 11707136064.

The previous prime is 13129884413. The next prime is 13129884479. The reversal of 13129884431 is 13448892131.

It is not a de Polignac number, because 13129884431 - 2³⁰ = 12056142607 is a prime.

It is a super-2 number, since 2×13129884431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129884931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1063595 + ... + 1075868.

It is an arithmetic number, because the mean of its divisors is an integer number (1222703676).

Almost surely, 2^13129884431 is an apocalyptic number.

13129884431 is a deficient number, since it is larger than the sum of its proper divisors (1542559681).

13129884431 is a wasteful number, since it uses less digits than its factorization.

13129884431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139518 (or 2139499 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The spelling of 13129884431 in words is "thirteen billion, one hundred twenty-nine million, eight hundred eighty-four thousand, four hundred thirty-one".