111340291 has 2 divisors, whose sum is σ = 111340292. Its totient is φ = 111340290.

The previous prime is 111340237. The next prime is 111340319. The reversal of 111340291 is 192043111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111340291 - 2⁹ = 111339779 is a prime.

It is not a weakly prime, because it can be changed into another prime (111340211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55670145 + 55670146.

It is an arithmetic number, because the mean of its divisors is an integer number (55670146).

Almost surely, 2^111340291 is an apocalyptic number.

111340291 is a deficient number, since it is larger than the sum of its proper divisors (1).

111340291 is an equidigital number, since it uses as much as digits as its factorization.

111340291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 111340291 is about 10551.7908906498. The cubic root of 111340291 is about 481.0801643698.

The spelling of 111340291 in words is "one hundred eleven million, three hundred forty thousand, two hundred ninety-one".