111203473 has 2 divisors, whose sum is σ = 111203474. Its totient is φ = 111203472.

The previous prime is 111203471. The next prime is 111203503. The reversal of 111203473 is 374302111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99860049 + 11343424 = 9993^2 + 3368^2 .

It is an emirp because it is prime and its reverse (374302111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111203473 - 2¹ = 111203471 is a prime.

Together with 111203471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111203471) 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, 55601736 + 55601737.

It is an arithmetic number, because the mean of its divisors is an integer number (55601737).

Almost surely, 2^111203473 is an apocalyptic number.

It is an amenable number.

111203473 is a deficient number, since it is larger than the sum of its proper divisors (1).

111203473 is an equidigital number, since it uses as much as digits as its factorization.

111203473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 111203473 is about 10545.3057328842. The cubic root of 111203473 is about 480.8830287705.

Adding to 111203473 its reverse (374302111), we get a palindrome (485505584).

The spelling of 111203473 in words is "one hundred eleven million, two hundred three thousand, four hundred seventy-three".