111286361 has 2 divisors, whose sum is σ = 111286362. Its totient is φ = 111286360.

The previous prime is 111286339. The next prime is 111286367. The reversal of 111286361 is 163682111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110901961 + 384400 = 10531^2 + 620^2 .

It is an emirp because it is prime and its reverse (163682111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111286361 - 2²² = 107092057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111286367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55643180 + 55643181.

It is an arithmetic number, because the mean of its divisors is an integer number (55643181).

Almost surely, 2^111286361 is an apocalyptic number.

It is an amenable number.

111286361 is a deficient number, since it is larger than the sum of its proper divisors (1).

111286361 is an equidigital number, since it uses as much as digits as its factorization.

111286361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 111286361 is about 10549.2350907542. The cubic root of 111286361 is about 481.0024780770.

The spelling of 111286361 in words is "one hundred eleven million, two hundred eighty-six thousand, three hundred sixty-one".