111395813 has 2 divisors, whose sum is σ = 111395814. Its totient is φ = 111395812.

The previous prime is 111395797. The next prime is 111395833. The reversal of 111395813 is 318593111.

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., 109139809 + 2256004 = 10447^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 111395813 - 2⁴ = 111395797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111395813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111395833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55697906 + 55697907.

It is an arithmetic number, because the mean of its divisors is an integer number (55697907).

Almost surely, 2^111395813 is an apocalyptic number.

It is an amenable number.

111395813 is a deficient number, since it is larger than the sum of its proper divisors (1).

111395813 is an equidigital number, since it uses as much as digits as its factorization.

111395813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 32.

The square root of 111395813 is about 10554.4214905413. The cubic root of 111395813 is about 481.1601177391.

The spelling of 111395813 in words is "one hundred eleven million, three hundred ninety-five thousand, eight hundred thirteen".