1143404111 has 4 divisors (see below), whose sum is σ = 1160469912. Its totient is φ = 1126338312.

The previous prime is 1143404063. The next prime is 1143404113. The reversal of 1143404111 is 1114043411.

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 1143404111 - 2⁶ = 1143404047 is a prime.

It is a super-2 number, since 2×1143404111² = 2614745922103400642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143404113) 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, 8532800 + ... + 8532933.

It is an arithmetic number, because the mean of its divisors is an integer number (290117478).

Almost surely, 2^1143404111 is an apocalyptic number.

1143404111 is a deficient number, since it is larger than the sum of its proper divisors (17065801).

1143404111 is an equidigital number, since it uses as much as digits as its factorization.

1143404111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17065800.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1143404111 is about 33814.2589893672. The cubic root of 1143404111 is about 1045.6826841849.

Adding to 1143404111 its reverse (1114043411), we get a palindrome (2257447522).

The spelling of 1143404111 in words is "one billion, one hundred forty-three million, four hundred four thousand, one hundred eleven".