1232544321 has 6 divisors (see below), whose sum is σ = 1780341810. Its totient is φ = 821696208.

The previous prime is 1232544311. The next prime is 1232544323. The reversal of 1232544321 is 1234452321.

1232544321 is a `hidden beast` number, since 12 + 325 + 4 + 4 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1176833025 + 55711296 = 34305^2 + 7464^2 .

It is not a de Polignac number, because 1232544321 - 2²⁶ = 1165435457 is a prime.

It is a super-3 number, since 3×1232544321³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1232544323) 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 5 ways as a sum of consecutive naturals, for example, 68474676 + ... + 68474693.

It is an arithmetic number, because the mean of its divisors is an integer number (296723635).

Almost surely, 2^1232544321 is an apocalyptic number.

It is an amenable number.

1232544321 is a deficient number, since it is larger than the sum of its proper divisors (547797489).

1232544321 is a wasteful number, since it uses less digits than its factorization.

1232544321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136949375 (or 136949372 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 1232544321 is about 35107.6105851708. The cubic root of 1232544321 is about 1072.1795387942.

Adding to 1232544321 its reverse (1234452321), we get a palindrome (2466996642).

The spelling of 1232544321 in words is "one billion, two hundred thirty-two million, five hundred forty-four thousand, three hundred twenty-one".