1323122231 has 4 divisors (see below), whose sum is σ = 1342870392. Its totient is φ = 1303374072.

The previous prime is 1323122201. The next prime is 1323122243. The reversal of 1323122231 is 1322213231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1322213231 = 107 ⋅12357133.

It is a cyclic number.

It is not a de Polignac number, because 1323122231 - 2⁶ = 1323122167 is a prime.

It is a super-2 number, since 2×1323122231² = 3501304876332834722, 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 (1323122201) 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, 9873980 + ... + 9874113.

It is an arithmetic number, because the mean of its divisors is an integer number (335717598).

Almost surely, 2^1323122231 is an apocalyptic number.

1323122231 is a deficient number, since it is larger than the sum of its proper divisors (19748161).

1323122231 is an equidigital number, since it uses as much as digits as its factorization.

1323122231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19748160.

The product of its digits is 432, while the sum is 20.

The square root of 1323122231 is about 36374.7471606333. The cubic root of 1323122231 is about 1097.8255200229.

Adding to 1323122231 its reverse (1322213231), we get a palindrome (2645335462).

The spelling of 1323122231 in words is "one billion, three hundred twenty-three million, one hundred twenty-two thousand, two hundred thirty-one".