111809743 has 2 divisors, whose sum is σ = 111809744. Its totient is φ = 111809742.

The previous prime is 111809741. The next prime is 111809783. The reversal of 111809743 is 347908111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111809743 - 2¹ = 111809741 is a prime.

Together with 111809741, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 111809699 and 111809708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111809741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55904871 + 55904872.

It is an arithmetic number, because the mean of its divisors is an integer number (55904872).

Almost surely, 2^111809743 is an apocalyptic number.

111809743 is a deficient number, since it is larger than the sum of its proper divisors (1).

111809743 is an equidigital number, since it uses as much as digits as its factorization.

111809743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 111809743 is about 10574.0126252998. The cubic root of 111809743 is about 481.7553538292.

The spelling of 111809743 in words is "one hundred eleven million, eight hundred nine thousand, seven hundred forty-three".