1233312321 has 8 divisors (see below), whose sum is σ = 1645275744. Its totient is φ = 821778560.

The previous prime is 1233312317. The next prime is 1233312337. The reversal of 1233312321 is 1232133321.

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 1233312321 - 2² = 1233312317 is a prime.

It is a super-2 number, since 2×1233312321² = 3042118562260814082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1233312361) 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, 100656 + ... + 112241.

It is an arithmetic number, because the mean of its divisors is an integer number (205659468).

Almost surely, 2^1233312321 is an apocalyptic number.

It is an amenable number.

1233312321 is a deficient number, since it is larger than the sum of its proper divisors (411963423).

1233312321 is a wasteful number, since it uses less digits than its factorization.

1233312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214831.

The product of its digits is 648, while the sum is 21.

The square root of 1233312321 is about 35118.5466812054. The cubic root of 1233312321 is about 1072.4021847209.

Adding to 1233312321 its reverse (1232133321), we get a palindrome (2465445642).

The spelling of 1233312321 in words is "one billion, two hundred thirty-three million, three hundred twelve thousand, three hundred twenty-one".