1232512321 has 8 divisors (see below), whose sum is σ = 1243180224. Its totient is φ = 1221863760.

The previous prime is 1232512289. The next prime is 1232512373. The reversal of 1232512321 is 1232152321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1232512321 - 2⁵ = 1232512289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232512292 and 1232512301.

It is not an unprimeable number, because it can be changed into a prime (1232512621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142116 + ... + 150538.

It is an arithmetic number, because the mean of its divisors is an integer number (155397528).

Almost surely, 2^1232512321 is an apocalyptic number.

It is an amenable number.

1232512321 is a deficient number, since it is larger than the sum of its proper divisors (10667903).

1232512321 is a wasteful number, since it uses less digits than its factorization.

1232512321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9671.

The product of its digits is 720, while the sum is 22.

The square root of 1232512321 is about 35107.1548405735. The cubic root of 1232512321 is about 1072.1702598738.

Adding to 1232512321 its reverse (1232152321), we get a palindrome (2464664642).

Subtracting from 1232512321 its reverse (1232152321), we obtain a square (360000 = 600²).

The spelling of 1232512321 in words is "one billion, two hundred thirty-two million, five hundred twelve thousand, three hundred twenty-one".