1233431323 has 4 divisors (see below), whose sum is σ = 1233501640. Its totient is φ = 1233361008.

The previous prime is 1233431321. The next prime is 1233431357. The reversal of 1233431323 is 3231343321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1233431323 - 2¹ = 1233431321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233431321) 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, 15136 + ... + 51922.

It is an arithmetic number, because the mean of its divisors is an integer number (308375410).

Almost surely, 2^1233431323 is an apocalyptic number.

1233431323 is a deficient number, since it is larger than the sum of its proper divisors (70317).

1233431323 is an equidigital number, since it uses as much as digits as its factorization.

1233431323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70316.

The product of its digits is 3888, while the sum is 25.

The square root of 1233431323 is about 35120.2409302670. The cubic root of 1233431323 is about 1072.4366755518.

Adding to 1233431323 its reverse (3231343321), we get a palindrome (4464774644).

The spelling of 1233431323 in words is "one billion, two hundred thirty-three million, four hundred thirty-one thousand, three hundred twenty-three".