111313511 has 2 divisors, whose sum is σ = 111313512. Its totient is φ = 111313510.

The previous prime is 111313493. The next prime is 111313523. The reversal of 111313511 is 115313111.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (115313111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111313511 is a prime.

It is a super-2 number, since 2×111313511² = 24781395462294242, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111313511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111313561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55656755 + 55656756.

It is an arithmetic number, because the mean of its divisors is an integer number (55656756).

Almost surely, 2^111313511 is an apocalyptic number.

111313511 is a deficient number, since it is larger than the sum of its proper divisors (1).

111313511 is an equidigital number, since it uses as much as digits as its factorization.

111313511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45, while the sum is 17.

The square root of 111313511 is about 10550.5218354354. The cubic root of 111313511 is about 481.0415908527.

Adding to 111313511 its reverse (115313111), we get a palindrome (226626622).

The spelling of 111313511 in words is "one hundred eleven million, three hundred thirteen thousand, five hundred eleven".