1143001332 has 108 divisors (see below), whose sum is σ = 3191270628. Its totient is φ = 344678400.

The previous prime is 1143001283. The next prime is 1143001393. The reversal of 1143001332 is 2331003411.

It can be written as a sum of positive squares in 2 ways, for example, as 958150116 + 184851216 = 30954^2 + 13596^2 .

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

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 1118982 + ... + 1120002.

Almost surely, 2^1143001332 is an apocalyptic number.

1143001332 is a gapful number since it is divisible by the number (12) 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 1143001332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1595635314).

1143001332 is an abundant number, since it is smaller than the sum of its proper divisors (2048269296).

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

1143001332 is a wasteful number, since it uses less digits than its factorization.

1143001332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1143001332 is about 33808.3027080627. The cubic root of 1143001332 is about 1045.5598846466.

Adding to 1143001332 its reverse (2331003411), we get a palindrome (3474004743).

The spelling of 1143001332 in words is "one billion, one hundred forty-three million, one thousand, three hundred thirty-two".