3157315820 has 48 divisors (see below), whose sum is σ = 7210153440. Its totient is φ = 1156506624.

The previous prime is 3157315813. The next prime is 3157315829. The reversal of 3157315820 is 285137513.

It is not an unprimeable number, because it can be changed into a prime (3157315829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112910 + ... + 138069.

It is an arithmetic number, because the mean of its divisors is an integer number (150211530).

Almost surely, 2^3157315820 is an apocalyptic number.

It is an amenable number.

3157315820 is an abundant number, since it is smaller than the sum of its proper divisors (4052837620).

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

3157315820 is a wasteful number, since it uses less digits than its factorization.

3157315820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251042 (or 251040 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 3157315820 is about 56189.9975084534. The cubic root of 3157315820 is about 1467.0311716854.

The spelling of 3157315820 in words is "three billion, one hundred fifty-seven million, three hundred fifteen thousand, eight hundred twenty".