2331291 has 4 divisors (see below), whose sum is σ = 3108392. Its totient is φ = 1554192.

The previous prime is 2331283. The next prime is 2331299. The reversal of 2331291 is 1921332.

It is a happy number.

2331291 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.

It is an interprime number because it is at equal distance from previous prime (2331283) and next prime (2331299).

It is not a de Polignac number, because 2331291 - 2³ = 2331283 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2331299) 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, 388546 + ... + 388551.

It is an arithmetic number, because the mean of its divisors is an integer number (777098).

2^2331291 is an apocalyptic number.

2331291 is a deficient number, since it is larger than the sum of its proper divisors (777101).

2331291 is an equidigital number, since it uses as much as digits as its factorization.

2331291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777100.

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

The square root of 2331291 is about 1526.8565747967. The cubic root of 2331291 is about 132.5965310568.

The spelling of 2331291 in words is "two million, three hundred thirty-one thousand, two hundred ninety-one".