2281393 has 4 divisors (see below), whose sum is σ = 2380608. Its totient is φ = 2182180.

The previous prime is 2281381. The next prime is 2281403. The reversal of 2281393 is 3931822.

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 2281393 - 2⁵ = 2281361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2281313) 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, 49573 + ... + 49618.

It is an arithmetic number, because the mean of its divisors is an integer number (595152).

2^2281393 is an apocalyptic number.

2281393 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2281393 is a deficient number, since it is larger than the sum of its proper divisors (99215).

2281393 is an equidigital number, since it uses as much as digits as its factorization.

2281393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99214.

The product of its digits is 2592, while the sum is 28.

The square root of 2281393 is about 1510.4280850143. The cubic root of 2281393 is about 131.6436862812.

The spelling of 2281393 in words is "two million, two hundred eighty-one thousand, three hundred ninety-three".