111317749 has 2 divisors, whose sum is σ = 111317750. Its totient is φ = 111317748.

The previous prime is 111317743. The next prime is 111317777. The reversal of 111317749 is 947713111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109307025 + 2010724 = 10455^2 + 1418^2 .

It is an emirp because it is prime and its reverse (947713111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111317749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111317743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55658874 + 55658875.

It is an arithmetic number, because the mean of its divisors is an integer number (55658875).

Almost surely, 2^111317749 is an apocalyptic number.

It is an amenable number.

111317749 is a deficient number, since it is larger than the sum of its proper divisors (1).

111317749 is an equidigital number, since it uses as much as digits as its factorization.

111317749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 34.

The square root of 111317749 is about 10550.7226766701. The cubic root of 111317749 is about 481.0476956175.

The spelling of 111317749 in words is "one hundred eleven million, three hundred seventeen thousand, seven hundred forty-nine".