111143393 has 2 divisors, whose sum is σ = 111143394.
Its totient is φ = 111143392.
The previous prime is 111143371. The next prime is 111143411. The reversal of 111143393 is 393341111.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 83759104 + 27384289 = 9152^2 + 5233^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-111143393 is a prime.
It is not a weakly prime, because it can be changed into another prime (111143323) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55571696 + 55571697.
It is an arithmetic number, because the mean of its divisors is an integer number (55571697).
Almost surely, 2111143393 is an apocalyptic number.
It is an amenable number.
111143393 is a deficient number, since it is larger than the sum of its proper divisors (1).
111143393 is an equidigital number, since it uses as much as digits as its factorization.
111143393 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 972, while the sum is 26.
The square root of 111143393 is about 10542.4566871294.
The cubic root of 111143393 is about 480.7964108012.
The spelling of 111143393 in words is "one hundred eleven million, one hundred forty-three thousand, three hundred ninety-three".