12700931 has 4 divisors (see below), whose sum is σ = 12709200. Its totient is φ = 12692664.

The previous prime is 12700913. The next prime is 12700937. The reversal of 12700931 is 13900721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12700931 is a prime.

It is a super-2 number, since 2×12700931² = 322627296533522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12700897 and 12700906.

It is not an unprimeable number, because it can be changed into a prime (12700937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1076 + ... + 5153.

It is an arithmetic number, because the mean of its divisors is an integer number (3177300).

Almost surely, 2^12700931 is an apocalyptic number.

12700931 is a deficient number, since it is larger than the sum of its proper divisors (8269).

12700931 is an equidigital number, since it uses as much as digits as its factorization.

12700931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8268.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 12700931 is about 3563.8365562972. The cubic root of 12700931 is about 233.3163563612.

It can be divided in two parts, 12700 and 931, that added together give a palindrome (13631).

The spelling of 12700931 in words is "twelve million, seven hundred thousand, nine hundred thirty-one".