2281139 has 4 divisors (see below), whose sum is σ = 2607024. Its totient is φ = 1955256.

The previous prime is 2281127. The next prime is 2281151. The reversal of 2281139 is 9311822.

2281139 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (2281127) and next prime (2281151).

It is a cyclic number.

It is not a de Polignac number, because 2281139 - 2²⁰ = 1232563 is a prime.

2281139 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (2281109) 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, 162932 + ... + 162945.

It is an arithmetic number, because the mean of its divisors is an integer number (651756).

2^2281139 is an apocalyptic number.

2281139 is a deficient number, since it is larger than the sum of its proper divisors (325885).

2281139 is an equidigital number, since it uses as much as digits as its factorization.

2281139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325884.

The product of its digits is 864, while the sum is 26.

The square root of 2281139 is about 1510.3440005509. The cubic root of 2281139 is about 131.6388005619.

The spelling of 2281139 in words is "two million, two hundred eighty-one thousand, one hundred thirty-nine".