2313121 has 4 divisors (see below), whose sum is σ = 2317744. Its totient is φ = 2308500.

The previous prime is 2313107. The next prime is 2313137. The reversal of 2313121 is 1213132.

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 2^k-2313121 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2313161) 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, 1455 + ... + 2596.

It is an arithmetic number, because the mean of its divisors is an integer number (579436).

2^2313121 is an apocalyptic number.

It is an amenable number.

2313121 is a deficient number, since it is larger than the sum of its proper divisors (4623).

2313121 is an equidigital number, since it uses as much as digits as its factorization.

2313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4622.

The product of its digits is 36, while the sum is 13.

The square root of 2313121 is about 1520.8948024107. The cubic root of 2313121 is about 132.2511479633.

Adding to 2313121 its reverse (1213132), we get a palindrome (3526253).

The spelling of 2313121 in words is "two million, three hundred thirteen thousand, one hundred twenty-one".