2313281 has 4 divisors (see below), whose sum is σ = 2323200.
Its totient is φ = 2303364.
The previous prime is 2313253. The next prime is 2313323. The reversal of 2313281 is 1823132.
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 a de Polignac number, because none of the positive numbers 2k-2313281 is a prime.
It is a super-2 number, since 2×23132812 = 10702537969922, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2313211) 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, 4601 + ... + 5078.
It is an arithmetic number, because the mean of its divisors is an integer number (580800).
22313281 is an apocalyptic number.
It is an amenable number.
2313281 is a deficient number, since it is larger than the sum of its proper divisors (9919).
2313281 is an equidigital number, since it uses as much as digits as its factorization.
2313281 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9918.
The product of its digits is 288, while the sum is 20.
The square root of 2313281 is about 1520.9474021149.
The cubic root of 2313281 is about 132.2541971907.
The spelling of 2313281 in words is "two million, three hundred thirteen thousand, two hundred eighty-one".