1143233136 has 120 divisors (see below), whose sum is σ = 3486267440. Its totient is φ = 358622208.

The previous prime is 1143233111. The next prime is 1143233137. The reversal of 1143233136 is 6313323411.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143233137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120270 + ... + 129426.

Almost surely, 2^1143233136 is an apocalyptic number.

1143233136 is a gapful number since it is divisible by the number (16) 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 1143233136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1743133720).

1143233136 is an abundant number, since it is smaller than the sum of its proper divisors (2343034304).

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

1143233136 is a wasteful number, since it uses less digits than its factorization.

1143233136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9208 (or 9179 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 1143233136 is about 33811.7307454085. The cubic root of 1143233136 is about 1045.6305607325.

Adding to 1143233136 its reverse (6313323411), we get a palindrome (7456556547).

The spelling of 1143233136 in words is "one billion, one hundred forty-three million, two hundred thirty-three thousand, one hundred thirty-six".