2315987331 has 8 divisors (see below), whose sum is σ = 3529123584. Its totient is φ = 1323421320.

The previous prime is 2315987327. The next prime is 2315987341. The reversal of 2315987331 is 1337895132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2315987331 - 2² = 2315987327 is a prime.

It is a super-2 number, since 2×2315987331² = 10727594634705007122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2315987321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55142535 + ... + 55142576.

It is an arithmetic number, because the mean of its divisors is an integer number (441140448).

Almost surely, 2^2315987331 is an apocalyptic number.

2315987331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2315987331 is a deficient number, since it is larger than the sum of its proper divisors (1213136253).

2315987331 is a wasteful number, since it uses less digits than its factorization.

2315987331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110285121.

The product of its digits is 136080, while the sum is 42.

The square root of 2315987331 is about 48124.7060354658. The cubic root of 2315987331 is about 1323.0575226842.

The spelling of 2315987331 in words is "two billion, three hundred fifteen million, nine hundred eighty-seven thousand, three hundred thirty-one".