1111199143 has 4 divisors (see below), whose sum is σ = 1111758688. Its totient is φ = 1110639600.

The previous prime is 1111199099. The next prime is 1111199149. The reversal of 1111199143 is 3419911111.

It is a happy number.

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 1111199143 - 2²⁹ = 574328231 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 (1111199149) 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, 276783 + ... + 280768.

It is an arithmetic number, because the mean of its divisors is an integer number (277939672).

Almost surely, 2^1111199143 is an apocalyptic number.

1111199143 is a deficient number, since it is larger than the sum of its proper divisors (559545).

1111199143 is an equidigital number, since it uses as much as digits as its factorization.

1111199143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559544.

The product of its digits is 972, while the sum is 31.

The square root of 1111199143 is about 33334.6537855128. The cubic root of 1111199143 is about 1035.7715214836.

The spelling of 1111199143 in words is "one billion, one hundred eleven million, one hundred ninety-nine thousand, one hundred forty-three".