1323431 has 2 divisors, whose sum is σ = 1323432. Its totient is φ = 1323430.

The previous prime is 1323409. The next prime is 1323437. The reversal of 1323431 is 1343231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1323431 - 2⁶ = 1323367 is a prime.

It is a super-2 number, since 2×1323431² = 3502939223522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661715 + 661716.

It is an arithmetic number, because the mean of its divisors is an integer number (661716).

2^1323431 is an apocalyptic number.

1323431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323431 is an equidigital number, since it uses as much as digits as its factorization.

1323431 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 1323431 is about 1150.4047113951. The cubic root of 1323431 is about 109.7910911006.

Adding to 1323431 its reverse (1343231), we get a palindrome (2666662).

The spelling of 1323431 in words is "one million, three hundred twenty-three thousand, four hundred thirty-one".