1323113231 has 16 divisors (see below), whose sum is σ = 1468976256. Its totient is φ = 1181700000.

The previous prime is 1323113221. The next prime is 1323113243.

1323113231 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1323113231 - 2⁶ = 1323113167 is a prime.

It is a super-2 number, since 2×1323113231² = 3501257244094518722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323113221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140996 + ... + 150086.

It is an arithmetic number, because the mean of its divisors is an integer number (91811016).

Almost surely, 2^1323113231 is an apocalyptic number.

1323113231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1323113231 is a deficient number, since it is larger than the sum of its proper divisors (145863025).

1323113231 is a wasteful number, since it uses less digits than its factorization.

1323113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9334.

The product of its digits is 324, while the sum is 20.

The square root of 1323113231 is about 36374.6234482228. The cubic root of 1323113231 is about 1097.8230308470.

It can be divided in two parts, 13231 and 13231, that added together give a palindrome (26462).

The spelling of 1323113231 in words is "one billion, three hundred twenty-three million, one hundred thirteen thousand, two hundred thirty-one".