1143361320 has 32 divisors (see below), whose sum is σ = 3430084320. Its totient is φ = 304896320.

The previous prime is 1143361283. The next prime is 1143361327. The reversal of 1143361320 is 231633411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1143361327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4763886 + ... + 4764125.

It is an arithmetic number, because the mean of its divisors is an integer number (107190135).

Almost surely, 2^1143361320 is an apocalyptic number.

1143361320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143361320 is an abundant number, since it is smaller than the sum of its proper divisors (2286723000).

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

1143361320 is a wasteful number, since it uses less digits than its factorization.

1143361320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9528025 (or 9528021 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1143361320 is about 33813.6262474169. The cubic root of 1143361320 is about 1045.6696394047.

Adding to 1143361320 its reverse (231633411), we get a palindrome (1374994731).

The spelling of 1143361320 in words is "one billion, one hundred forty-three million, three hundred sixty-one thousand, three hundred twenty".