323231431 has 2 divisors, whose sum is σ = 323231432. Its totient is φ = 323231430.

The previous prime is 323231417. The next prime is 323231437. The reversal of 323231431 is 134132323.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 323231431 - 2⁵ = 323231399 is a prime.

It is a super-2 number, since 2×323231431² = 208957115972615522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323231437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161615715 + 161615716.

It is an arithmetic number, because the mean of its divisors is an integer number (161615716).

Almost surely, 2^323231431 is an apocalyptic number.

323231431 is a deficient number, since it is larger than the sum of its proper divisors (1).

323231431 is an equidigital number, since it uses as much as digits as its factorization.

323231431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 22.

The square root of 323231431 is about 17978.6381853576. The cubic root of 323231431 is about 686.2850341381.

Adding to 323231431 its reverse (134132323), we get a palindrome (457363754).

The spelling of 323231431 in words is "three hundred twenty-three million, two hundred thirty-one thousand, four hundred thirty-one".