1111122431 has 8 divisors (see below), whose sum is σ = 1176948864. Its totient is φ = 1045347840.

The previous prime is 1111122421. The next prime is 1111122437. The reversal of 1111122431 is 1342211111.

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-1111122431 is a prime.

It is a super-2 number, since 2×1111122431² = 2469186113342699522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111122437) 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, 36626 + ... + 59696.

It is an arithmetic number, because the mean of its divisors is an integer number (147118608).

Almost surely, 2^1111122431 is an apocalyptic number.

1111122431 is a deficient number, since it is larger than the sum of its proper divisors (65826433).

1111122431 is a wasteful number, since it uses less digits than its factorization.

1111122431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25921.

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

The square root of 1111122431 is about 33333.5031312342. The cubic root of 1111122431 is about 1035.7476859920.

Adding to 1111122431 its reverse (1342211111), we get a palindrome (2453333542).

The spelling of 1111122431 in words is "one billion, one hundred eleven million, one hundred twenty-two thousand, four hundred thirty-one".