2315521351331 has 4 divisors (see below), whose sum is σ = 2395366915200. Its totient is φ = 2235675787464.

The previous prime is 2315521351301. The next prime is 2315521351399. The reversal of 2315521351331 is 1331531255132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2315521351331 - 2³⁴ = 2298341482147 is a prime.

It is a super-2 number, since 2×2315521351331² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2315521351291 and 2315521351300.

It is not an unprimeable number, because it can be changed into a prime (2315521351301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39922781891 + ... + 39922781948.

It is an arithmetic number, because the mean of its divisors is an integer number (598841728800).

Almost surely, 2^{2315521351331} is an apocalyptic number.

2315521351331 is a deficient number, since it is larger than the sum of its proper divisors (79845563869).

2315521351331 is an equidigital number, since it uses as much as digits as its factorization.

2315521351331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79845563868.

The product of its digits is 40500, while the sum is 35.

The spelling of 2315521351331 in words is "two trillion, three hundred fifteen billion, five hundred twenty-one million, three hundred fifty-one thousand, three hundred thirty-one".