173073913 has 2 divisors, whose sum is σ = 173073914. Its totient is φ = 173073912.

The previous prime is 173073883. The next prime is 173073917. The reversal of 173073913 is 319370371.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170772624 + 2301289 = 13068^2 + 1517^2 .

It is an emirp because it is prime and its reverse (319370371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173073913 - 2¹⁷ = 172942841 is a prime.

It is a super-2 number, since 2×173073913² = 59909158722263138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (173073917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86536956 + 86536957.

It is an arithmetic number, because the mean of its divisors is an integer number (86536957).

Almost surely, 2^173073913 is an apocalyptic number.

It is an amenable number.

173073913 is a deficient number, since it is larger than the sum of its proper divisors (1).

173073913 is an equidigital number, since it uses as much as digits as its factorization.

173073913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11907, while the sum is 34.

The square root of 173073913 is about 13155.7558885835. The cubic root of 173073913 is about 557.2848082588.

The spelling of 173073913 in words is "one hundred seventy-three million, seventy-three thousand, nine hundred thirteen".