2318881 has 4 divisors (see below), whose sum is σ = 2322432. Its totient is φ = 2315332.

The previous prime is 2318879. The next prime is 2318891. The reversal of 2318881 is 1888132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2318881 - 2¹ = 2318879 is a prime.

It is a super-2 number, since 2×2318881² = 10754418184322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2318801) 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, 481 + ... + 2206.

It is an arithmetic number, because the mean of its divisors is an integer number (580608).

2^2318881 is an apocalyptic number.

It is an amenable number.

2318881 is a deficient number, since it is larger than the sum of its proper divisors (3551).

2318881 is an equidigital number, since it uses as much as digits as its factorization.

2318881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550.

The product of its digits is 3072, while the sum is 31.

The square root of 2318881 is about 1522.7872471229. The cubic root of 2318881 is about 132.3608316884.

The spelling of 2318881 in words is "two million, three hundred eighteen thousand, eight hundred eighty-one".