12163391431 has 4 divisors (see below), whose sum is σ = 12163657912. Its totient is φ = 12163124952.

The previous prime is 12163391419. The next prime is 12163391459. The reversal of 12163391431 is 13419336121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12163391431 - 2²¹ = 12161294279 is a prime.

It is a super-2 number, since 2×12163391431² (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 (12163391491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45525 + ... + 162478.

It is an arithmetic number, because the mean of its divisors is an integer number (3040914478).

Almost surely, 2^12163391431 is an apocalyptic number.

12163391431 is a deficient number, since it is larger than the sum of its proper divisors (266481).

12163391431 is an equidigital number, since it uses as much as digits as its factorization.

12163391431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266480.

The product of its digits is 11664, while the sum is 34.

The spelling of 12163391431 in words is "twelve billion, one hundred sixty-three million, three hundred ninety-one thousand, four hundred thirty-one".