1232552321 has 48 divisors (see below), whose sum is σ = 1698825600. Its totient is φ = 886092480.

The previous prime is 1232552311. The next prime is 1232552323.

It is a happy number.

1232552321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1232552321 - 2³⁰ = 158810497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1232552323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 636671 + ... + 638603.

It is an arithmetic number, because the mean of its divisors is an integer number (35392200).

Almost surely, 2^1232552321 is an apocalyptic number.

1232552321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1232552321 is a deficient number, since it is larger than the sum of its proper divisors (466273279).

1232552321 is a wasteful number, since it uses less digits than its factorization.

1232552321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1964 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 1232552321 is about 35107.7245203958. The cubic root of 1232552321 is about 1072.1818584992.

It can be divided in two parts, 12325 and 52321, that added together give a palindrome (64646).

The spelling of 1232552321 in words is "one billion, two hundred thirty-two million, five hundred fifty-two thousand, three hundred twenty-one".