2315215231 has 16 divisors (see below), whose sum is σ = 2665958400. Its totient is φ = 1969514208.

The previous prime is 2315215219. The next prime is 2315215237. The reversal of 2315215231 is 1325125132.

It is a cyclic number.

It is not a de Polignac number, because 2315215231 - 2²⁷ = 2180997503 is a prime.

It is a super-2 number, since 2×2315215231² = 10720443131708766722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2315215196 and 2315215205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315215237) 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, 869380 + ... + 872038.

It is an arithmetic number, because the mean of its divisors is an integer number (166622400).

Almost surely, 2^2315215231 is an apocalyptic number.

2315215231 is a deficient number, since it is larger than the sum of its proper divisors (350743169).

2315215231 is a wasteful number, since it uses less digits than its factorization.

2315215231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558.

The product of its digits is 1800, while the sum is 25.

The square root of 2315215231 is about 48116.6834995929. The cubic root of 2315215231 is about 1322.9104801048.

Subtracting from 2315215231 its reverse (1325125132), we obtain a palindrome (990090099).

It can be divided in two parts, 23152 and 15231, that added together give a palindrome (38383).

The spelling of 2315215231 in words is "two billion, three hundred fifteen million, two hundred fifteen thousand, two hundred thirty-one".