3112161872 has 20 divisors (see below), whose sum is σ = 6060427956. Its totient is φ = 1548180480.

The previous prime is 3112161821. The next prime is 3112161893. The reversal of 3112161872 is 2781612113.

It can be written as a sum of positive squares in 2 ways, for example, as 2849851456 + 262310416 = 53384^2 + 16196^2 .

It is a congruent number.

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, 490529 + ... + 496832.

Almost surely, 2^3112161872 is an apocalyptic number.

It is an amenable number.

3112161872 is a deficient number, since it is larger than the sum of its proper divisors (2948266084).

3112161872 is a wasteful number, since it uses less digits than its factorization.

3112161872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987566 (or 987560 counting only the distinct ones).

The product of its digits is 4032, while the sum is 32.

The square root of 3112161872 is about 55786.7535531509. The cubic root of 3112161872 is about 1460.0040457760.

Adding to 3112161872 its reverse (2781612113), we get a palindrome (5893773985).

The spelling of 3112161872 in words is "three billion, one hundred twelve million, one hundred sixty-one thousand, eight hundred seventy-two".