1323310231 has 4 divisors (see below), whose sum is σ = 1324037952. Its totient is φ = 1322582512.

The previous prime is 1323310211. The next prime is 1323310349. The reversal of 1323310231 is 1320133231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320133231 = 23 ⋅57397097.

It is a cyclic number.

It is not a de Polignac number, because 1323310231 - 2⁵ = 1323310199 is a prime.

It is a super-2 number, since 2×1323310231² = 3502299934938546722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323310199 and 1323310208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323310211) 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, 361126 + ... + 364771.

It is an arithmetic number, because the mean of its divisors is an integer number (331009488).

Almost surely, 2^1323310231 is an apocalyptic number.

1323310231 is a deficient number, since it is larger than the sum of its proper divisors (727721).

1323310231 is an equidigital number, since it uses as much as digits as its factorization.

1323310231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727720.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1323310231 is about 36377.3312792459. The cubic root of 1323310231 is about 1097.8775135623.

Adding to 1323310231 its reverse (1320133231), we get a palindrome (2643443462).

The spelling of 1323310231 in words is "one billion, three hundred twenty-three million, three hundred ten thousand, two hundred thirty-one".