1143322131 has 64 divisors (see below), whose sum is σ = 1969228800. Its totient is φ = 574304256.

The previous prime is 1143322123. The next prime is 1143322133. The reversal of 1143322131 is 1312233411.

It is not a de Polignac number, because 1143322131 - 2³ = 1143322123 is a prime.

It is a super-2 number, since 2×1143322131² = 2614370990468762322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1143322098 and 1143322107.

It is not an unprimeable number, because it can be changed into a prime (1143322133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 494005 + ... + 496313.

It is an arithmetic number, because the mean of its divisors is an integer number (30769200).

Almost surely, 2^1143322131 is an apocalyptic number.

1143322131 is a deficient number, since it is larger than the sum of its proper divisors (825906669).

1143322131 is a wasteful number, since it uses less digits than its factorization.

1143322131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428.

The product of its digits is 432, while the sum is 21.

The square root of 1143322131 is about 33813.0467571321. The cubic root of 1143322131 is about 1045.6576924039.

Adding to 1143322131 its reverse (1312233411), we get a palindrome (2455555542).

The spelling of 1143322131 in words is "one billion, one hundred forty-three million, three hundred twenty-two thousand, one hundred thirty-one".