111320203 has 2 divisors, whose sum is σ = 111320204. Its totient is φ = 111320202.

The previous prime is 111320189. The next prime is 111320239. The reversal of 111320203 is 302023111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111320203 - 2⁵ = 111320171 is a prime.

It is a super-2 number, since 2×111320203² = 24784375191922418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111323203) 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, 55660101 + 55660102.

It is an arithmetic number, because the mean of its divisors is an integer number (55660102).

Almost surely, 2^111320203 is an apocalyptic number.

111320203 is a deficient number, since it is larger than the sum of its proper divisors (1).

111320203 is an equidigital number, since it uses as much as digits as its factorization.

111320203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 111320203 is about 10550.8389713804. The cubic root of 111320203 is about 481.0512304906.

Adding to 111320203 its reverse (302023111), we get a palindrome (413343314).

It can be divided in two parts, 1113 and 20203, that added together give a square (21316 = 146²).

The spelling of 111320203 in words is "one hundred eleven million, three hundred twenty thousand, two hundred three".