2315501220 has 24 divisors (see below), whose sum is σ = 6483403584. Its totient is φ = 617466976.

The previous prime is 2315501207. The next prime is 2315501233. The reversal of 2315501220 is 221055132.

It is an interprime number because it is at equal distance from previous prime (2315501207) and next prime (2315501233).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19295784 + ... + 19295903.

It is an arithmetic number, because the mean of its divisors is an integer number (270141816).

Almost surely, 2^2315501220 is an apocalyptic number.

2315501220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2315501220 is an abundant number, since it is smaller than the sum of its proper divisors (4167902364).

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

2315501220 is a wasteful number, since it uses less digits than its factorization.

2315501220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38591699 (or 38591697 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2315501220 is about 48119.6552356727. The cubic root of 2315501220 is about 1322.9649490894.

Adding to 2315501220 its reverse (221055132), we get a palindrome (2536556352).

The spelling of 2315501220 in words is "two billion, three hundred fifteen million, five hundred one thousand, two hundred twenty".