1143011320 has 64 divisors (see below), whose sum is σ = 2970626400. Its totient is φ = 391188480.

The previous prime is 1143011273. The next prime is 1143011347. The reversal of 1143011320 is 231103411.

It is a junction number, because it is equal to n+sod(n) for n = 1143011294 and 1143011303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68925 + ... + 83884.

Almost surely, 2^1143011320 is an apocalyptic number.

1143011320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143011320 is an abundant number, since it is smaller than the sum of its proper divisors (1827615080).

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

1143011320 is a wasteful number, since it uses less digits than its factorization.

1143011320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152848 (or 152844 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1143011320 is about 33808.4504229342. The cubic root of 1143011320 is about 1045.5629301437.

Adding to 1143011320 its reverse (231103411), we get a palindrome (1374114731).

The spelling of 1143011320 in words is "one billion, one hundred forty-three million, eleven thousand, three hundred twenty".