73173123 has 12 divisors (see below), whose sum is σ = 111257640. Its totient is φ = 46214496.

The previous prime is 73173109. The next prime is 73173131. The reversal of 73173123 is 32137137.

It is not a de Polignac number, because 73173123 - 2⁵ = 73173091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73173823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213786 + ... + 214127.

It is an arithmetic number, because the mean of its divisors is an integer number (9271470).

Almost surely, 2^73173123 is an apocalyptic number.

73173123 is a deficient number, since it is larger than the sum of its proper divisors (38084517).

73173123 is a wasteful number, since it uses less digits than its factorization.

73173123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427938 (or 427935 counting only the distinct ones).

The product of its digits is 2646, while the sum is 27.

The square root of 73173123 is about 8554.1290030020. The cubic root of 73173123 is about 418.2640422511.

It can be divided in two parts, 7317 and 3123, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 73173123 in words is "seventy-three million, one hundred seventy-three thousand, one hundred twenty-three".