13113412431 has 16 divisors (see below), whose sum is σ = 19986418944. Its totient is φ = 7491849984.

The previous prime is 13113412427. The next prime is 13113412463. The reversal of 13113412431 is 13421431131.

It is a happy number.

It is not a de Polignac number, because 13113412431 - 2² = 13113412427 is a prime.

It is a super-2 number, since 2×13113412431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113412031) 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, 46111 + ... + 168383.

It is an arithmetic number, because the mean of its divisors is an integer number (1249151184).

Almost surely, 2^13113412431 is an apocalyptic number.

13113412431 is a deficient number, since it is larger than the sum of its proper divisors (6873006513).

13113412431 is a wasteful number, since it uses less digits than its factorization.

13113412431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127390.

The product of its digits is 864, while the sum is 24.

Adding to 13113412431 its reverse (13421431131), we get a palindrome (26534843562).

The spelling of 13113412431 in words is "thirteen billion, one hundred thirteen million, four hundred twelve thousand, four hundred thirty-one".