1143233321 has 2 divisors, whose sum is σ = 1143233322. Its totient is φ = 1143233320.

The previous prime is 1143233297. The next prime is 1143233339. The reversal of 1143233321 is 1233323411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1039417600 + 103815721 = 32240^2 + 10189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143233321 - 2⁶ = 1143233257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1143233341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571616660 + 571616661.

It is an arithmetic number, because the mean of its divisors is an integer number (571616661).

Almost surely, 2^1143233321 is an apocalyptic number.

It is an amenable number.

1143233321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143233321 is an equidigital number, since it uses as much as digits as its factorization.

1143233321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 1143233321 is about 33811.7334811453. The cubic root of 1143233321 is about 1045.6306171345.

Adding to 1143233321 its reverse (1233323411), we get a palindrome (2376556732).

The spelling of 1143233321 in words is "one billion, one hundred forty-three million, two hundred thirty-three thousand, three hundred twenty-one".