1143321102 has 128 divisors (see below), whose sum is σ = 3193344000. Its totient is φ = 294559200.

The previous prime is 1143321097. The next prime is 1143321103. The reversal of 1143321102 is 2011233411.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143321103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 543649 + ... + 545747.

It is an arithmetic number, because the mean of its divisors is an integer number (24948000).

Almost surely, 2^1143321102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143321102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596672000).

1143321102 is an abundant number, since it is smaller than the sum of its proper divisors (2050022898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143321102 is a wasteful number, since it uses less digits than its factorization.

1143321102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259 (or 2253 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1143321102 is about 33813.0315411085. The cubic root of 1143321102 is about 1045.6573787034.

Adding to 1143321102 its reverse (2011233411), we get a palindrome (3154554513).

The spelling of 1143321102 in words is "one billion, one hundred forty-three million, three hundred twenty-one thousand, one hundred two".