1233422321 has 4 divisors (see below), whose sum is σ = 1233820644. Its totient is φ = 1233024000.

The previous prime is 1233422303. The next prime is 1233422329. The reversal of 1233422321 is 1232243321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 640000 + 1232782321 = 800^2 + 35111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1233422321 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 (1233422329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194480 + ... + 200721.

It is an arithmetic number, because the mean of its divisors is an integer number (308455161).

Almost surely, 2^1233422321 is an apocalyptic number.

It is an amenable number.

1233422321 is a deficient number, since it is larger than the sum of its proper divisors (398323).

1233422321 is an equidigital number, since it uses as much as digits as its factorization.

1233422321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398322.

The product of its digits is 1728, while the sum is 23.

The square root of 1233422321 is about 35120.1127703201. The cubic root of 1233422321 is about 1072.4340665433.

Adding to 1233422321 its reverse (1232243321), we get a palindrome (2465665642).

The spelling of 1233422321 in words is "one billion, two hundred thirty-three million, four hundred twenty-two thousand, three hundred twenty-one".