2315431155 has 16 divisors (see below), whose sum is σ = 3755440800. Its totient is φ = 1217979648.

The previous prime is 2315431121. The next prime is 2315431159. The reversal of 2315431155 is 5511345132.

It is a de Polignac number, because none of the positive numbers 2^k-2315431155 is a prime.

It is a super-2 number, since 2×2315431155² = 10722442867089268050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2315431159) 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, 1056180 + ... + 1058369.

It is an arithmetic number, because the mean of its divisors is an integer number (234715050).

Almost surely, 2^2315431155 is an apocalyptic number.

2315431155 is a deficient number, since it is larger than the sum of its proper divisors (1440009645).

2315431155 is a wasteful number, since it uses less digits than its factorization.

2315431155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114630.

The product of its digits is 9000, while the sum is 30.

The square root of 2315431155 is about 48118.9272012583. The cubic root of 2315431155 is about 1322.9516050420.

Adding to 2315431155 its reverse (5511345132), we get a palindrome (7826776287).

The spelling of 2315431155 in words is "two billion, three hundred fifteen million, four hundred thirty-one thousand, one hundred fifty-five".