2316121855 has 4 divisors (see below), whose sum is σ = 2779346232. Its totient is φ = 1852897480.

The previous prime is 2316121823. The next prime is 2316121867. The reversal of 2316121855 is 5581216132.

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

It is not a de Polignac number, because 2316121855 - 2⁵ = 2316121823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2316121855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231612181 + ... + 231612190.

It is an arithmetic number, because the mean of its divisors is an integer number (694836558).

Almost surely, 2^2316121855 is an apocalyptic number.

2316121855 is a deficient number, since it is larger than the sum of its proper divisors (463224377).

2316121855 is an equidigital number, since it uses as much as digits as its factorization.

2316121855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463224376.

The product of its digits is 14400, while the sum is 34.

The square root of 2316121855 is about 48126.1036756561. The cubic root of 2316121855 is about 1323.0831387633.

Adding to 2316121855 its reverse (5581216132), we get a palindrome (7897337987).

The spelling of 2316121855 in words is "two billion, three hundred sixteen million, one hundred twenty-one thousand, eight hundred fifty-five".