2313681 has 4 divisors (see below), whose sum is σ = 3084912. Its totient is φ = 1542452.

The previous prime is 2313679. The next prime is 2313767. The reversal of 2313681 is 1863132.

2313681 = T₄₉₈ + T₄₉₉ + ... + T₅₁₅.

2313681 is digitally balanced in base 2, 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, 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 2313681 - 2¹ = 2313679 is a prime.

It is a super-2 number, since 2×2313681² = 10706239539522, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2313601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385611 + ... + 385616.

It is an arithmetic number, because the mean of its divisors is an integer number (771228).

2^2313681 is an apocalyptic number.

It is an amenable number.

2313681 is a deficient number, since it is larger than the sum of its proper divisors (771231).

2313681 is an equidigital number, since it uses as much as digits as its factorization.

2313681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771230.

The product of its digits is 864, while the sum is 24.

The square root of 2313681 is about 1521.0788934174. The cubic root of 2313681 is about 132.2618196442.

The spelling of 2313681 in words is "two million, three hundred thirteen thousand, six hundred eighty-one".