13154521431 has 32 divisors (see below), whose sum is σ = 18324275200. Its totient is φ = 8384394240.

The previous prime is 13154521417. The next prime is 13154521433. The reversal of 13154521431 is 13412545131.

It is not a de Polignac number, because 13154521431 - 2⁹ = 13154520919 is a prime.

It is a super-2 number, since 2×13154521431² (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 (13154521433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7477530 + ... + 7479288.

It is an arithmetic number, because the mean of its divisors is an integer number (572633600).

Almost surely, 2^13154521431 is an apocalyptic number.

13154521431 is a deficient number, since it is larger than the sum of its proper divisors (5169753769).

13154521431 is a wasteful number, since it uses less digits than its factorization.

13154521431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719.

The product of its digits is 7200, while the sum is 30.

The spelling of 13154521431 in words is "thirteen billion, one hundred fifty-four million, five hundred twenty-one thousand, four hundred thirty-one".