1143302512 has 20 divisors (see below), whose sum is σ = 2416526136. Its totient is φ = 519682880.

The previous prime is 1143302483. The next prime is 1143302519. The reversal of 1143302512 is 2152033411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143302519) 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, 3247843 + ... + 3248194.

Almost surely, 2^1143302512 is an apocalyptic number.

It is an amenable number.

1143302512 is an abundant number, since it is smaller than the sum of its proper divisors (1273223624).

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

1143302512 is a wasteful number, since it uses less digits than its factorization.

1143302512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6496056 (or 6496050 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1143302512 is about 33812.7566459761. The cubic root of 1143302512 is about 1045.6517113320.

Adding to 1143302512 its reverse (2152033411), we get a palindrome (3295335923).

The spelling of 1143302512 in words is "one billion, one hundred forty-three million, three hundred two thousand, five hundred twelve".