2311315500 has 96 divisors (see below), whose sum is σ = 7248346560. Its totient is φ = 568934400.

The previous prime is 2311315499. The next prime is 2311315507. The reversal of 2311315500 is 55131132.

It is not an unprimeable number, because it can be changed into a prime (2311315507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39765 + ... + 78764.

It is an arithmetic number, because the mean of its divisors is an integer number (75503610).

Almost surely, 2^2311315500 is an apocalyptic number.

2311315500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311315500 is an abundant number, since it is smaller than the sum of its proper divisors (4937031060).

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

2311315500 is a wasteful number, since it uses less digits than its factorization.

2311315500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118564 (or 118552 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 2311315500 is about 48076.1427321286. The cubic root of 2311315500 is about 1322.1672958794.

Adding to 2311315500 its reverse (55131132), we get a palindrome (2366446632).

The spelling of 2311315500 in words is "two billion, three hundred eleven million, three hundred fifteen thousand, five hundred".