13012243431 has 32 divisors (see below), whose sum is σ = 19754461440. Its totient is φ = 7548652800.

The previous prime is 13012243427. The next prime is 13012243451. The reversal of 13012243431 is 13434221031.

It is a happy number.

It is not a de Polignac number, because 13012243431 - 2² = 13012243427 is a prime.

It is a super-2 number, since 2×13012243431² (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 (13012243451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19021 + ... + 162438.

It is an arithmetic number, because the mean of its divisors is an integer number (617326920).

Almost surely, 2^13012243431 is an apocalyptic number.

13012243431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13012243431 is a deficient number, since it is larger than the sum of its proper divisors (6742218009).

13012243431 is a wasteful number, since it uses less digits than its factorization.

13012243431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181567.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 13012243431 its reverse (13434221031), we get a palindrome (26446464462).

The spelling of 13012243431 in words is "thirteen billion, twelve million, two hundred forty-three thousand, four hundred thirty-one".