3130221920 has 72 divisors (see below), whose sum is σ = 8602542144. Its totient is φ = 1073216256.

The previous prime is 3130221877. The next prime is 3130221953. The reversal of 3130221920 is 291220313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191792 + ... + 207471.

It is an arithmetic number, because the mean of its divisors is an integer number (119479752).

Almost surely, 2^3130221920 is an apocalyptic number.

It is an amenable number.

3130221920 is an abundant number, since it is smaller than the sum of its proper divisors (5472320224).

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

3130221920 is a wasteful number, since it uses less digits than its factorization.

3130221920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399292 (or 399277 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 3130221920 is about 55948.3862144388. The cubic root of 3130221920 is about 1462.8227618902.

The spelling of 3130221920 in words is "three billion, one hundred thirty million, two hundred twenty-one thousand, nine hundred twenty".