1143233144 has 16 divisors (see below), whose sum is σ = 2172927120. Its totient is φ = 563785920.

The previous prime is 1143233137. The next prime is 1143233149. The reversal of 1143233144 is 4413323411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143233149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978212 + ... + 979379.

It is an arithmetic number, because the mean of its divisors is an integer number (135807945).

Almost surely, 2^1143233144 is an apocalyptic number.

It is an amenable number.

1143233144 is a deficient number, since it is larger than the sum of its proper divisors (1029693976).

1143233144 is a wasteful number, since it uses less digits than its factorization.

1143233144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957670 (or 1957666 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 1143233144 is about 33811.7308637106. The cubic root of 1143233144 is about 1045.6305631715.

Adding to 1143233144 its reverse (4413323411), we get a palindrome (5556556555).

The spelling of 1143233144 in words is "one billion, one hundred forty-three million, two hundred thirty-three thousand, one hundred forty-four".