1111322143 has 8 divisors (see below), whose sum is σ = 1152747728. Its totient is φ = 1070604864.

The previous prime is 1111322129. The next prime is 1111322153. The reversal of 1111322143 is 3412231111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111322143 - 2⁵ = 1111322111 is a prime.

It is a super-2 number, since 2×1111322143² = 2470073811044224898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111322143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111322153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173880 + ... + 180157.

It is an arithmetic number, because the mean of its divisors is an integer number (144093466).

Almost surely, 2^1111322143 is an apocalyptic number.

1111322143 is a deficient number, since it is larger than the sum of its proper divisors (41425585).

1111322143 is an equidigital number, since it uses as much as digits as its factorization.

1111322143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354153.

The product of its digits is 144, while the sum is 19.

The square root of 1111322143 is about 33336.4986613771. The cubic root of 1111322143 is about 1035.8097370149.

Adding to 1111322143 its reverse (3412231111), we get a palindrome (4523553254).

The spelling of 1111322143 in words is "one billion, one hundred eleven million, three hundred twenty-two thousand, one hundred forty-three".