2315128860 has 72 divisors (see below), whose sum is σ = 7660978416. Its totient is φ = 561242880.

The previous prime is 2315128819. The next prime is 2315128873. The reversal of 2315128860 is 688215132.

It is a happy number.

2315128860 is a `hidden beast` number, since 2 + 3 + 1 + 512 + 88 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 582649 + ... + 586608.

It is an arithmetic number, because the mean of its divisors is an integer number (106402478).

Almost surely, 2^2315128860 is an apocalyptic number.

2315128860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2315128860 is an abundant number, since it is smaller than the sum of its proper divisors (5345849556).

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

2315128860 is a wasteful number, since it uses less digits than its factorization.

2315128860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169283 (or 1169278 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 2315128860 is about 48115.7859750831. The cubic root of 2315128860 is about 1322.8940291473.

The spelling of 2315128860 in words is "two billion, three hundred fifteen million, one hundred twenty-eight thousand, eight hundred sixty".