2312231 has 4 divisors (see below), whose sum is σ = 2355912. Its totient is φ = 2268552.

The previous prime is 2312209. The next prime is 2312249. The reversal of 2312231 is 1322132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2312231 is a prime.

It is a super-2 number, since 2×2312231² = 10692824394722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21761 + ... + 21866.

It is an arithmetic number, because the mean of its divisors is an integer number (588978).

2^2312231 is an apocalyptic number.

2312231 is a deficient number, since it is larger than the sum of its proper divisors (43681).

2312231 is an equidigital number, since it uses as much as digits as its factorization.

2312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43680.

The product of its digits is 72, while the sum is 14.

The square root of 2312231 is about 1520.6021833471. The cubic root of 2312231 is about 132.2341840690.

Adding to 2312231 its reverse (1322132), we get a palindrome (3634363).

Subtracting from 2312231 its reverse (1322132), we obtain a palindrome (990099).

The spelling of 2312231 in words is "two million, three hundred twelve thousand, two hundred thirty-one".