12936494431 has 8 divisors (see below), whose sum is σ = 14802405920. Its totient is φ = 11075043168.

The previous prime is 12936494393. The next prime is 12936494477. The reversal of 12936494431 is 13449463921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12936494431 - 2⁷ = 12936494303 is a prime.

It is a super-2 number, since 2×12936494431² (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 (12936494231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108836 + ... + 1120441.

It is an arithmetic number, because the mean of its divisors is an integer number (1850300740).

Almost surely, 2^12936494431 is an apocalyptic number.

12936494431 is a deficient number, since it is larger than the sum of its proper divisors (1865911489).

12936494431 is an equidigital number, since it uses as much as digits as its factorization.

12936494431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230113.

The product of its digits is 559872, while the sum is 46.

The spelling of 12936494431 in words is "twelve billion, nine hundred thirty-six million, four hundred ninety-four thousand, four hundred thirty-one".