2313639 has 12 divisors (see below), whose sum is σ = 3487536. Its totient is φ = 1475232.

The previous prime is 2313631. The next prime is 2313643. The reversal of 2313639 is 9363132.

2313639 is a `hidden beast` number, since 23 + 1 + 3 + 639 = 666.

It is not a de Polignac number, because 2313639 - 2³ = 2313631 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2313631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5382 + ... + 5795.

It is an arithmetic number, because the mean of its divisors is an integer number (290628).

2^2313639 is an apocalyptic number.

2313639 is a deficient number, since it is larger than the sum of its proper divisors (1173897).

2313639 is a wasteful number, since it uses less digits than its factorization.

2313639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11206 (or 11203 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 2313639 is about 1521.0650873648. The cubic root of 2313639 is about 132.2610193278.

Multiplying 2313639 by its sum of digits (27), we get a triangular number (62468253 = T₁₁₁₇₇).

The spelling of 2313639 in words is "two million, three hundred thirteen thousand, six hundred thirty-nine".