2315217823 has 4 divisors (see below), whose sum is σ = 2316008520. Its totient is φ = 2314427128.

The previous prime is 2315217803. The next prime is 2315217841. The reversal of 2315217823 is 3287125132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2315217823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315217803) 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, 390940 + ... + 396817.

It is an arithmetic number, because the mean of its divisors is an integer number (579002130).

Almost surely, 2^2315217823 is an apocalyptic number.

2315217823 is a deficient number, since it is larger than the sum of its proper divisors (790697).

2315217823 is an equidigital number, since it uses as much as digits as its factorization.

2315217823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790696.

The product of its digits is 20160, while the sum is 34.

The square root of 2315217823 is about 48116.7104341101. The cubic root of 2315217823 is about 1322.9109737929.

The spelling of 2315217823 in words is "two billion, three hundred fifteen million, two hundred seventeen thousand, eight hundred twenty-three".