1143200321 has 8 divisors (see below), whose sum is σ = 1158807264. Its totient is φ = 1127689920.

The previous prime is 1143200281. The next prime is 1143200351. The reversal of 1143200321 is 1230023411.

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-1143200321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143200321.

It is not an unprimeable number, because it can be changed into a prime (1143200351) 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, 131 + ... + 47816.

It is an arithmetic number, because the mean of its divisors is an integer number (144850908).

Almost surely, 2^1143200321 is an apocalyptic number.

It is an amenable number.

1143200321 is a deficient number, since it is larger than the sum of its proper divisors (15606943).

1143200321 is a wasteful number, since it uses less digits than its factorization.

1143200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48271.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1143200321 is about 33811.2454813484. The cubic root of 1143200321 is about 1045.6205561546.

Adding to 1143200321 its reverse (1230023411), we get a palindrome (2373223732).

The spelling of 1143200321 in words is "one billion, one hundred forty-three million, two hundred thousand, three hundred twenty-one".