73170113 has 4 divisors (see below), whose sum is σ = 73218900. Its totient is φ = 73121328.

The previous prime is 73170109. The next prime is 73170169. The reversal of 73170113 is 31107137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31107137 = 3079 ⋅10103.

It can be written as a sum of positive squares in 2 ways, for example, as 9042049 + 64128064 = 3007^2 + 8008^2 .

It is a cyclic number.

It is not a de Polignac number, because 73170113 - 2² = 73170109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73170313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22070 + ... + 25167.

It is an arithmetic number, because the mean of its divisors is an integer number (18304725).

Almost surely, 2^73170113 is an apocalyptic number.

It is an amenable number.

73170113 is a deficient number, since it is larger than the sum of its proper divisors (48787).

73170113 is a wasteful number, since it uses less digits than its factorization.

73170113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48786.

The product of its (nonzero) digits is 441, while the sum is 23.

The square root of 73170113 is about 8553.9530627658. The cubic root of 73170113 is about 418.2583070304.

The spelling of 73170113 in words is "seventy-three million, one hundred seventy thousand, one hundred thirteen".