1143233021 has 8 divisors (see below), whose sum is σ = 1375318080. Its totient is φ = 928339488.

The previous prime is 1143232999. The next prime is 1143233033. The reversal of 1143233021 is 1203323411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143233021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143232984 and 1143233002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143233321) 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, 4297736 + ... + 4298001.

It is an arithmetic number, because the mean of its divisors is an integer number (171914760).

Almost surely, 2^1143233021 is an apocalyptic number.

It is an amenable number.

1143233021 is a deficient number, since it is larger than the sum of its proper divisors (232085059).

1143233021 is an equidigital number, since it uses as much as digits as its factorization.

1143233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8595763.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1143233021 is about 33811.7290448152. The cubic root of 1143233021 is about 1045.6305256719.

Adding to 1143233021 its reverse (1203323411), we get a palindrome (2346556432).

The spelling of 1143233021 in words is "one billion, one hundred forty-three million, two hundred thirty-three thousand, twenty-one".