1143703221 has 8 divisors (see below), whose sum is σ = 1591239360. Its totient is φ = 729317952.

The previous prime is 1143703219. The next prime is 1143703261. The reversal of 1143703221 is 1223073411.

It is a happy number.

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

It is not a de Polignac number, because 1143703221 - 2¹ = 1143703219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143703191 and 1143703200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143703201) 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, 8287636 + ... + 8287773.

It is an arithmetic number, because the mean of its divisors is an integer number (198904920).

Almost surely, 2^1143703221 is an apocalyptic number.

It is an amenable number.

1143703221 is a deficient number, since it is larger than the sum of its proper divisors (447536139).

1143703221 is a wasteful number, since it uses less digits than its factorization.

1143703221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16575435.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1143703221 is about 33818.6815384633. The cubic root of 1143703221 is about 1045.7738583886.

Adding to 1143703221 its reverse (1223073411), we get a palindrome (2366776632).

The spelling of 1143703221 in words is "one billion, one hundred forty-three million, seven hundred three thousand, two hundred twenty-one".