2308881 has 4 divisors (see below), whose sum is σ = 3078512. Its totient is φ = 1539252.

The previous prime is 2308871. The next prime is 2308883. The reversal of 2308881 is 1888032.

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 not a de Polignac number, because 2308881 - 2¹³ = 2300689 is a prime.

It is a super-2 number, since 2×2308881² = 10661862944322, which contains 22 as substring.

It is a D-number.

It is the 1520-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2308883) by changing a digit.

It is a nontrivial repunit in base 1519.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384811 + ... + 384816.

It is an arithmetic number, because the mean of its divisors is an integer number (769628).

2^2308881 is an apocalyptic number.

It is an amenable number.

2308881 is a deficient number, since it is larger than the sum of its proper divisors (769631).

2308881 is an equidigital number, since it uses as much as digits as its factorization.

2308881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769630.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 2308881 is about 1519.5002467917. The cubic root of 2308881 is about 132.1702921505.

The spelling of 2308881 in words is "two million, three hundred eight thousand, eight hundred eighty-one".