12870931 has 8 divisors (see below), whose sum is σ = 13263824. Its totient is φ = 12480480.

The previous prime is 12870919. The next prime is 12870941. The reversal of 12870931 is 13907821.

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

It is a cyclic number.

It is not a de Polignac number, because 12870931 - 2⁵ = 12870899 is a prime.

It is a super-2 number, since 2×12870931² = 331321729613522, 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 = 12870893 and 12870902.

It is not an unprimeable number, because it can be changed into a prime (12870941) 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, 19696 + ... + 20338.

It is an arithmetic number, because the mean of its divisors is an integer number (1657978).

Almost surely, 2^12870931 is an apocalyptic number.

12870931 is a deficient number, since it is larger than the sum of its proper divisors (392893).

12870931 is an equidigital number, since it uses as much as digits as its factorization.

12870931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12870931 is about 3587.6079774691. The cubic root of 12870931 is about 234.3527139936.

The spelling of 12870931 in words is "twelve million, eight hundred seventy thousand, nine hundred thirty-one".