12892318931 has 2 divisors, whose sum is σ = 12892318932. Its totient is φ = 12892318930.

The previous prime is 12892318927. The next prime is 12892318949. The reversal of 12892318931 is 13981329821.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13981329821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12892318931 - 2² = 12892318927 is a prime.

It is a super-2 number, since 2×12892318931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12892318981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6446159465 + 6446159466.

It is an arithmetic number, because the mean of its divisors is an integer number (6446159466).

Almost surely, 2^12892318931 is an apocalyptic number.

12892318931 is a deficient number, since it is larger than the sum of its proper divisors (1).

12892318931 is an equidigital number, since it uses as much as digits as its factorization.

12892318931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 47.

The spelling of 12892318931 in words is "twelve billion, eight hundred ninety-two million, three hundred eighteen thousand, nine hundred thirty-one".