3121990048 has 24 divisors (see below), whose sum is σ = 6148152612. Its totient is φ = 1560554496.

The previous prime is 3121990043. The next prime is 3121990063. The reversal of 3121990048 is 8400991213.

It can be written as a sum of positive squares in 2 ways, for example, as 2599776144 + 522213904 = 50988^2 + 22852^2 .

It is a super-2 number, since 2×3121990048² = 19493643719622084608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3121989989 and 3121990016.

It is not an unprimeable number, because it can be changed into a prime (3121990043) 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, 121986 + ... + 145342.

Almost surely, 2^3121990048 is an apocalyptic number.

It is an amenable number.

3121990048 is a deficient number, since it is larger than the sum of its proper divisors (3026162564).

3121990048 is a wasteful number, since it uses less digits than its factorization.

3121990048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27544 (or 27536 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 3121990048 is about 55874.7711225737. The cubic root of 3121990048 is about 1461.5393234924.

The spelling of 3121990048 in words is "three billion, one hundred twenty-one million, nine hundred ninety thousand, forty-eight".