13431513431 has 12 divisors (see below), whose sum is σ = 15626638008. Its totient is φ = 11511086832.

The previous prime is 13431513419. The next prime is 13431513457.

It is a happy number.

13431513431 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13431513431 - 2¹⁰ = 13431512407 is a prime.

It is a super-2 number, since 2×13431513431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13431513394 and 13431513403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431513131) 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, 435245 + ... + 465081.

It is an arithmetic number, because the mean of its divisors is an integer number (1302219834).

Almost surely, 2^13431513431 is an apocalyptic number.

13431513431 is a deficient number, since it is larger than the sum of its proper divisors (2195124577).

13431513431 is an equidigital number, since it uses as much as digits as its factorization.

13431513431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39038 (or 39031 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The spelling of 13431513431 in words is "thirteen billion, four hundred thirty-one million, five hundred thirteen thousand, four hundred thirty-one".