1122431111 has 8 divisors (see below), whose sum is σ = 1146783744. Its totient is φ = 1098098200.

The previous prime is 1122431083. The next prime is 1122431113. The reversal of 1122431111 is 1111342211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122431111 is a prime.

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 1122431111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122431113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207086 + ... + 212436.

It is an arithmetic number, because the mean of its divisors is an integer number (143347968).

Almost surely, 2^1122431111 is an apocalyptic number.

1122431111 is a deficient number, since it is larger than the sum of its proper divisors (24352633).

1122431111 is an equidigital number, since it uses as much as digits as its factorization.

1122431111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9861.

The product of its digits is 48, while the sum is 17.

The square root of 1122431111 is about 33502.7030402026. The cubic root of 1122431111 is about 1039.2496779200.

Adding to 1122431111 its reverse (1111342211), we get a palindrome (2233773322).

Subtracting from 1122431111 its reverse (1111342211), we obtain a square (11088900 = 3330²).

The spelling of 1122431111 in words is "one billion, one hundred twenty-two million, four hundred thirty-one thousand, one hundred eleven".