166303223 has 2 divisors, whose sum is σ = 166303224. Its totient is φ = 166303222.

The previous prime is 166303213. The next prime is 166303243. The reversal of 166303223 is 322303661.

It is a weak prime.

It is an emirp because it is prime and its reverse (322303661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166303223 - 2¹⁸ = 166041079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166303192 and 166303201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166303213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83151611 + 83151612.

It is an arithmetic number, because the mean of its divisors is an integer number (83151612).

Almost surely, 2^166303223 is an apocalyptic number.

166303223 is a deficient number, since it is larger than the sum of its proper divisors (1).

166303223 is an equidigital number, since it uses as much as digits as its factorization.

166303223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 166303223 is about 12895.8606924858. The cubic root of 166303223 is about 549.9208955103.

Adding to 166303223 its reverse (322303661), we get a palindrome (488606884).

The spelling of 166303223 in words is "one hundred sixty-six million, three hundred three thousand, two hundred twenty-three".