1143311120 has 60 divisors (see below), whose sum is σ = 3092200524. Its totient is φ = 391991040.

The previous prime is 1143311101. The next prime is 1143311123. The reversal of 1143311120 is 211133411.

It can be written as a sum of positive squares in 2 ways, for example, as 267387904 + 875923216 = 16352^2 + 29596^2 .

It is not an unprimeable number, because it can be changed into a prime (1143311123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141911 + ... + 149750.

Almost surely, 2^1143311120 is an apocalyptic number.

1143311120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143311120 is an abundant number, since it is smaller than the sum of its proper divisors (1948889404).

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

1143311120 is a wasteful number, since it uses less digits than its factorization.

1143311120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291688 (or 291675 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1143311120 is about 33812.8839349737. The cubic root of 1143311120 is about 1045.6543355856.

Adding to 1143311120 its reverse (211133411), we get a palindrome (1354444531).

The spelling of 1143311120 in words is "one billion, one hundred forty-three million, three hundred eleven thousand, one hundred twenty".