111012311 has 2 divisors, whose sum is σ = 111012312. Its totient is φ = 111012310.

The previous prime is 111012289. The next prime is 111012313. The reversal of 111012311 is 113210111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111012311 - 2²² = 106818007 is a prime.

It is a Sophie Germain prime.

Together with 111012313, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111012292 and 111012301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111012313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506155 + 55506156.

It is an arithmetic number, because the mean of its divisors is an integer number (55506156).

Almost surely, 2^111012311 is an apocalyptic number.

111012311 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012311 is an equidigital number, since it uses as much as digits as its factorization.

111012311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 111012311 is about 10536.2379908580. The cubic root of 111012311 is about 480.6073200951.

Adding to 111012311 its reverse (113210111), we get a palindrome (224222422).

The spelling of 111012311 in words is "one hundred eleven million, twelve thousand, three hundred eleven".