2315515722 has 64 divisors (see below), whose sum is σ = 5140243584. Its totient is φ = 690750720.

The previous prime is 2315515703. The next prime is 2315515723. The reversal of 2315515722 is 2275155132.

It is a super-2 number, since 2×2315515722² = 10723226117658362568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2315515723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 913597 + ... + 916127.

It is an arithmetic number, because the mean of its divisors is an integer number (80316306).

Almost surely, 2^2315515722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2315515722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2570121792).

2315515722 is an abundant number, since it is smaller than the sum of its proper divisors (2824727862).

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

2315515722 is a wasteful number, since it uses less digits than its factorization.

2315515722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903.

The product of its digits is 21000, while the sum is 33.

The square root of 2315515722 is about 48119.8059223019. The cubic root of 2315515722 is about 1322.9677109964.

The spelling of 2315515722 in words is "two billion, three hundred fifteen million, five hundred fifteen thousand, seven hundred twenty-two".