1143131320 has 16 divisors (see below), whose sum is σ = 2572045560. Its totient is φ = 457252512.

The previous prime is 1143131299. The next prime is 1143131351. The reversal of 1143131320 is 231313411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14289102 + ... + 14289181.

Almost surely, 2^1143131320 is an apocalyptic number.

1143131320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143131320 is an abundant number, since it is smaller than the sum of its proper divisors (1428914240).

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

1143131320 is a wasteful number, since it uses less digits than its factorization.

1143131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28578294 (or 28578290 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1143131320 is about 33810.2250805877. The cubic root of 1143131320 is about 1045.5995186297.

Adding to 1143131320 its reverse (231313411), we get a palindrome (1374444731).

The spelling of 1143131320 in words is "one billion, one hundred forty-three million, one hundred thirty-one thousand, three hundred twenty".