2312391 has 8 divisors (see below), whose sum is σ = 3264624. Its totient is φ = 1450880.

The previous prime is 2312381. The next prime is 2312407. The reversal of 2312391 is 1932132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2312391 - 2⁹ = 2311879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22620 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (408078).

2^2312391 is an apocalyptic number.

2312391 is a deficient number, since it is larger than the sum of its proper divisors (952233).

2312391 is a wasteful number, since it uses less digits than its factorization.

2312391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45361.

The product of its digits is 324, while the sum is 21.

The square root of 2312391 is about 1520.6547931730. The cubic root of 2312391 is about 132.2372340788.

The spelling of 2312391 in words is "two million, three hundred twelve thousand, three hundred ninety-one".