1143103200 has 144 divisors (see below), whose sum is σ = 3737010816. Its totient is φ = 303500800.

The previous prime is 1143103187. The next prime is 1143103201. The reversal of 1143103200 is 23013411.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1143103200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143103201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 630295 + ... + 632105.

It is an arithmetic number, because the mean of its divisors is an integer number (25951464).

Almost surely, 2^1143103200 is an apocalyptic number.

1143103200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143103200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1868505408).

1143103200 is an abundant number, since it is smaller than the sum of its proper divisors (2593907616).

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

1143103200 is a wasteful number, since it uses less digits than its factorization.

1143103200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097 (or 2084 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1143103200 is about 33809.8092275008. The cubic root of 1143103200 is about 1045.5909449575.

Adding to 1143103200 its reverse (23013411), we get a palindrome (1166116611).

The spelling of 1143103200 in words is "one billion, one hundred forty-three million, one hundred three thousand, two hundred".