173223091201 has 4 divisors (see below), whose sum is σ = 173503842372. Its totient is φ = 172942340032.

The previous prime is 173223091177. The next prime is 173223091231. The reversal of 173223091201 is 102190322371.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56789273025 + 116433818176 = 238305^2 + 341224^2 .

It is a cyclic number.

It is not a de Polignac number, because 173223091201 - 2²¹ = 173220994049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173223091231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140374660 + ... + 140375893.

It is an arithmetic number, because the mean of its divisors is an integer number (43375960593).

Almost surely, 2^173223091201 is an apocalyptic number.

It is an amenable number.

173223091201 is a deficient number, since it is larger than the sum of its proper divisors (280751171).

173223091201 is an equidigital number, since it uses as much as digits as its factorization.

173223091201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280751170.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 173223091201 in words is "one hundred seventy-three billion, two hundred twenty-three million, ninety-one thousand, two hundred one".