173145103 has 2 divisors, whose sum is σ = 173145104. Its totient is φ = 173145102.

The previous prime is 173145101. The next prime is 173145113. The reversal of 173145103 is 301541371.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 173145103 - 2¹ = 173145101 is a prime.

Together with 173145101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173145101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86572551 + 86572552.

It is an arithmetic number, because the mean of its divisors is an integer number (86572552).

Almost surely, 2^173145103 is an apocalyptic number.

173145103 is a deficient number, since it is larger than the sum of its proper divisors (1).

173145103 is an equidigital number, since it uses as much as digits as its factorization.

173145103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 173145103 is about 13158.4612702246. The cubic root of 173145103 is about 557.3612065762.

Adding to 173145103 its reverse (301541371), we get a palindrome (474686474).

The spelling of 173145103 in words is "one hundred seventy-three million, one hundred forty-five thousand, one hundred three".