3130920020 has 48 divisors (see below), whose sum is σ = 6970510848. Its totient is φ = 1179204480.

The previous prime is 3130920007. The next prime is 3130920049. The reversal of 3130920020 is 200290313.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3130919974 and 3130920001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45302 + ... + 91181.

It is an arithmetic number, because the mean of its divisors is an integer number (145218976).

Almost surely, 2^3130920020 is an apocalyptic number.

It is an amenable number.

3130920020 is an abundant number, since it is smaller than the sum of its proper divisors (3839590828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3130920020 is a wasteful number, since it uses less digits than its factorization.

3130920020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136560 (or 136558 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 3130920020 is about 55954.6246524807. The cubic root of 3130920020 is about 1462.9314997252.

The spelling of 3130920020 in words is "three billion, one hundred thirty million, nine hundred twenty thousand, twenty".