1111241231 has 2 divisors, whose sum is σ = 1111241232. Its totient is φ = 1111241230.

The previous prime is 1111241203. The next prime is 1111241249. The reversal of 1111241231 is 1321421111.

It is a strong prime.

It is an emirp because it is prime and its reverse (1321421111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111241231 is a prime.

It is a super-2 number, since 2×1111241231² = 2469714146948790722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111241291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555620615 + 555620616.

It is an arithmetic number, because the mean of its divisors is an integer number (555620616).

Almost surely, 2^1111241231 is an apocalyptic number.

1111241231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111241231 is an equidigital number, since it uses as much as digits as its factorization.

1111241231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1111241231 is about 33335.2850745273. The cubic root of 1111241231 is about 1035.7845983480.

Adding to 1111241231 its reverse (1321421111), we get a palindrome (2432662342).

The spelling of 1111241231 in words is "one billion, one hundred eleven million, two hundred forty-one thousand, two hundred thirty-one".