2881123 has 4 divisors (see below), whose sum is σ = 3292720. Its totient is φ = 2469528.

The previous prime is 2881117. The next prime is 2881127. The reversal of 2881123 is 3211882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211882 = 2 ⋅1605941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2881123 is a prime.

It is a super-2 number, since 2×2881123² = 16601739482258, which contains 22 as substring.

It is a Duffinian number.

2881123 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2881127) 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, 205788 + ... + 205801.

It is an arithmetic number, because the mean of its divisors is an integer number (823180).

2^2881123 is an apocalyptic number.

2881123 is a deficient number, since it is larger than the sum of its proper divisors (411597).

2881123 is an equidigital number, since it uses as much as digits as its factorization.

2881123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411596.

The product of its digits is 768, while the sum is 25.

The square root of 2881123 is about 1697.3871096482. The cubic root of 2881123 is about 142.2942223283.

The spelling of 2881123 in words is "two million, eight hundred eighty-one thousand, one hundred twenty-three".