2318391 has 12 divisors (see below), whose sum is σ = 3363568. Its totient is φ = 1538784.

The previous prime is 2318389. The next prime is 2318411. The reversal of 2318391 is 1938132.

2318391 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 2318391 - 2¹ = 2318389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2318311) 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, 2406 + ... + 3228.

2^2318391 is an apocalyptic number.

2318391 is a deficient number, since it is larger than the sum of its proper divisors (1045177).

2318391 is a wasteful number, since it uses less digits than its factorization.

2318391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142 (or 1139 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2318391 is about 1522.6263494371. The cubic root of 2318391 is about 132.3515080281.

The spelling of 2318391 in words is "two million, three hundred eighteen thousand, three hundred ninety-one".