3121431244 has 12 divisors (see below), whose sum is σ = 5552054368. Its totient is φ = 1535130000.

The previous prime is 3121431239. The next prime is 3121431253. The reversal of 3121431244 is 4421341213.

It is a super-2 number, since 2×3121431244² = 19486666022038775072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6396132 + ... + 6396619.

Almost surely, 2^3121431244 is an apocalyptic number.

It is an amenable number.

3121431244 is a deficient number, since it is larger than the sum of its proper divisors (2430623124).

3121431244 is a wasteful number, since it uses less digits than its factorization.

3121431244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12792816 (or 12792814 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 3121431244 is about 55869.7703950893. The cubic root of 3121431244 is about 1461.4521181372.

Adding to 3121431244 its reverse (4421341213), we get a palindrome (7542772457).

The spelling of 3121431244 in words is "three billion, one hundred twenty-one million, four hundred thirty-one thousand, two hundred forty-four".