4312331 has 2 divisors, whose sum is σ = 4312332. Its totient is φ = 4312330.

The previous prime is 4312309. The next prime is 4312333. The reversal of 4312331 is 1332134.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4312331 - 2⁶ = 4312267 is a prime.

It is a super-2 number, since 2×4312331² = 37192397307122, which contains 22 as substring.

Together with 4312333, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4312333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156165 + 2156166.

It is an arithmetic number, because the mean of its divisors is an integer number (2156166).

Almost surely, 2^4312331 is an apocalyptic number.

4312331 is a deficient number, since it is larger than the sum of its proper divisors (1).

4312331 is an equidigital number, since it uses as much as digits as its factorization.

4312331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 17.

The square root of 4312331 is about 2076.6152749125. The cubic root of 4312331 is about 162.7686255183.

Adding to 4312331 its reverse (1332134), we get a palindrome (5644465).

The spelling of 4312331 in words is "four million, three hundred twelve thousand, three hundred thirty-one".