1143131023 has 4 divisors (see below), whose sum is σ = 1148875600. Its totient is φ = 1137386448.

The previous prime is 1143131009. The next prime is 1143131089. The reversal of 1143131023 is 3201313411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1143131023 - 2²⁵ = 1109576591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143131123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2871990 + ... + 2872387.

It is an arithmetic number, because the mean of its divisors is an integer number (287218900).

Almost surely, 2^1143131023 is an apocalyptic number.

1143131023 is a deficient number, since it is larger than the sum of its proper divisors (5744577).

1143131023 is an equidigital number, since it uses as much as digits as its factorization.

1143131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744576.

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

The square root of 1143131023 is about 33810.2206884250. The cubic root of 1143131023 is about 1045.5994280763.

Adding to 1143131023 its reverse (3201313411), we get a palindrome (4344444434).

The spelling of 1143131023 in words is "one billion, one hundred forty-three million, one hundred thirty-one thousand, twenty-three".