173223403 has 2 divisors, whose sum is σ = 173223404. Its totient is φ = 173223402.

The previous prime is 173223371. The next prime is 173223431. The reversal of 173223403 is 304322371.

It is a strong prime.

It is an emirp because it is prime and its reverse (304322371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173223403 - 2⁵ = 173223371 is a prime.

It is not a weakly prime, because it can be changed into another prime (173223493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86611701 + 86611702.

It is an arithmetic number, because the mean of its divisors is an integer number (86611702).

Almost surely, 2^173223403 is an apocalyptic number.

173223403 is a deficient number, since it is larger than the sum of its proper divisors (1).

173223403 is an equidigital number, since it uses as much as digits as its factorization.

173223403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 173223403 is about 13161.4362058250. The cubic root of 173223403 is about 557.4452108879.

Adding to 173223403 its reverse (304322371), we get a palindrome (477545774).

The spelling of 173223403 in words is "one hundred seventy-three million, two hundred twenty-three thousand, four hundred three".