1111112311 has 2 divisors, whose sum is σ = 1111112312. Its totient is φ = 1111112310.

The previous prime is 1111112309. The next prime is 1111112357. The reversal of 1111112311 is 1132111111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111112311 - 2¹ = 1111112309 is a prime.

Together with 1111112309, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1111112291 and 1111112300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111112371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555556155 + 555556156.

It is an arithmetic number, because the mean of its divisors is an integer number (555556156).

Almost surely, 2^1111112311 is an apocalyptic number.

1111112311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111112311 is an equidigital number, since it uses as much as digits as its factorization.

1111112311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6, while the sum is 13.

The square root of 1111112311 is about 33333.3513316618. The cubic root of 1111112311 is about 1035.7445414845.

Adding to 1111112311 its reverse (1132111111), we get a palindrome (2243223422).

The spelling of 1111112311 in words is "one billion, one hundred eleven million, one hundred twelve thousand, three hundred eleven".