111243331 has 2 divisors, whose sum is σ = 111243332. Its totient is φ = 111243330.

The previous prime is 111243317. The next prime is 111243337. The reversal of 111243331 is 133342111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111243331 - 2⁹ = 111242819 is a prime.

It is a super-2 number, since 2×111243331² = 24750157383951122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111243299 and 111243308.

It is not a weakly prime, because it can be changed into another prime (111243337) 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, 55621665 + 55621666.

It is an arithmetic number, because the mean of its divisors is an integer number (55621666).

Almost surely, 2^111243331 is an apocalyptic number.

111243331 is a deficient number, since it is larger than the sum of its proper divisors (1).

111243331 is an equidigital number, since it uses as much as digits as its factorization.

111243331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 111243331 is about 10547.1954092071. The cubic root of 111243331 is about 480.9404752564.

Adding to 111243331 its reverse (133342111), we get a palindrome (244585442).

The spelling of 111243331 in words is "one hundred eleven million, two hundred forty-three thousand, three hundred thirty-one".