1232323021 has 4 divisors (see below), whose sum is σ = 1232506044. Its totient is φ = 1232140000.

The previous prime is 1232323009. The next prime is 1232323051. The reversal of 1232323021 is 1203232321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1203232321 = 43 ⋅27982147.

It can be written as a sum of positive squares in 2 ways, for example, as 786522025 + 445800996 = 28045^2 + 21114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232323021 - 2⁵ = 1232322989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232323021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232323051) 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, 81010 + ... + 95011.

It is an arithmetic number, because the mean of its divisors is an integer number (308126511).

Almost surely, 2^1232323021 is an apocalyptic number.

It is an amenable number.

1232323021 is a deficient number, since it is larger than the sum of its proper divisors (183023).

1232323021 is an equidigital number, since it uses as much as digits as its factorization.

1232323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183022.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1232323021 is about 35104.4587054123. The cubic root of 1232323021 is about 1072.1153659744.

Adding to 1232323021 its reverse (1203232321), we get a palindrome (2435555342).

It can be divided in two parts, 123232 and 3021, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 1232323021 in words is "one billion, two hundred thirty-two million, three hundred twenty-three thousand, twenty-one".