2313131 has 4 divisors (see below), whose sum is σ = 2322000. Its totient is φ = 2304264.

The previous prime is 2313107. The next prime is 2313137. The reversal of 2313131 is 1313132.

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

It is a cyclic number.

It is not a de Polignac number, because 2313131 - 2¹⁴ = 2296747 is a prime.

It is a super-2 number, since 2×2313131² = 10701150046322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2313137) 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, 4031 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (580500).

2^2313131 is an apocalyptic number.

2313131 is a deficient number, since it is larger than the sum of its proper divisors (8869).

2313131 is an equidigital number, since it uses as much as digits as its factorization.

2313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8868.

The product of its digits is 54, while the sum is 14.

The square root of 2313131 is about 1520.8980899455. The cubic root of 2313131 is about 132.2513385442.

Adding to 2313131 its reverse (1313132), we get a palindrome (3626263).

Subtracting from 2313131 its reverse (1313132), we obtain a palindrome (999999).

The spelling of 2313131 in words is "two million, three hundred thirteen thousand, one hundred thirty-one".