1323223231 has 4 divisors (see below), whose sum is σ = 1443516264. Its totient is φ = 1202930200.

The previous prime is 1323223199. The next prime is 1323223241.

1323223231 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1323223231 - 2⁵ = 1323223199 is a prime.

It is a super-2 number, since 2×1323223231² = 3501839438116158722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323223241) 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, 60146500 + ... + 60146521.

It is an arithmetic number, because the mean of its divisors is an integer number (360879066).

Almost surely, 2^1323223231 is an apocalyptic number.

1323223231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1323223231 is a deficient number, since it is larger than the sum of its proper divisors (120293033).

1323223231 is a wasteful number, since it uses less digits than its factorization.

1323223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120293032.

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

The square root of 1323223231 is about 36376.1354599413. The cubic root of 1323223231 is about 1097.8534533344.

It can be divided in two parts, 13232 and 23231, that added together give a palindrome (36463).

The spelling of 1323223231 in words is "one billion, three hundred twenty-three million, two hundred twenty-three thousand, two hundred thirty-one".