111897173 has 2 divisors, whose sum is σ = 111897174. Its totient is φ = 111897172.

The previous prime is 111897131. The next prime is 111897211. The reversal of 111897173 is 371798111.

It is an a-pointer prime, because the next prime (111897211) can be obtained adding 111897173 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106977649 + 4919524 = 10343^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 111897173 - 2¹² = 111893077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111897113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55948586 + 55948587.

It is an arithmetic number, because the mean of its divisors is an integer number (55948587).

Almost surely, 2^111897173 is an apocalyptic number.

It is an amenable number.

111897173 is a deficient number, since it is larger than the sum of its proper divisors (1).

111897173 is an equidigital number, since it uses as much as digits as its factorization.

111897173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 38.

The square root of 111897173 is about 10578.1460095803. The cubic root of 111897173 is about 481.8808911799.

The spelling of 111897173 in words is "one hundred eleven million, eight hundred ninety-seven thousand, one hundred seventy-three".