1143235236 has 96 divisors (see below), whose sum is σ = 3235147776. Its totient is φ = 309456000.

The previous prime is 1143235207. The next prime is 1143235253. The reversal of 1143235236 is 6325323411.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42451 + ... + 63941.

It is an arithmetic number, because the mean of its divisors is an integer number (33699456).

Almost surely, 2^1143235236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143235236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617573888).

1143235236 is an abundant number, since it is smaller than the sum of its proper divisors (2091912540).

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

1143235236 is a wasteful number, since it uses less digits than its factorization.

1143235236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21553 (or 21551 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 1143235236 is about 33811.7617997051. The cubic root of 1143235236 is about 1045.6312009702.

Adding to 1143235236 its reverse (6325323411), we get a palindrome (7468558647).

The spelling of 1143235236 in words is "one billion, one hundred forty-three million, two hundred thirty-five thousand, two hundred thirty-six".