1233012321 has 32 divisors (see below), whose sum is σ = 1888947200. Its totient is φ = 794085120.

The previous prime is 1233012317. The next prime is 1233012367. The reversal of 1233012321 is 1232103321.

1233012321 is a `hidden beast` number, since 1 + 2 + 330 + 12 + 321 = 666.

It is not a de Polignac number, because 1233012321 - 2² = 1233012317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1233012294 and 1233012303.

It is not an unprimeable number, because it can be changed into a prime (1233012301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 692985 + ... + 694761.

It is an arithmetic number, because the mean of its divisors is an integer number (59029600).

Almost surely, 2^1233012321 is an apocalyptic number.

It is an amenable number.

1233012321 is a deficient number, since it is larger than the sum of its proper divisors (655934879).

1233012321 is a wasteful number, since it uses less digits than its factorization.

1233012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646 (or 2640 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1233012321 is about 35114.2751740656. The cubic root of 1233012321 is about 1072.3152246596.

Adding to 1233012321 its reverse (1232103321), we get a palindrome (2465115642).

The spelling of 1233012321 in words is "one billion, two hundred thirty-three million, twelve thousand, three hundred twenty-one".