73181343 has 4 divisors (see below), whose sum is σ = 97575128. Its totient is φ = 48787560.

The previous prime is 73181321. The next prime is 73181389. The reversal of 73181343 is 34318137.

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

It is not a de Polignac number, because 73181343 - 2⁶ = 73181279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73181343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73181443) 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, 12196888 + ... + 12196893.

It is an arithmetic number, because the mean of its divisors is an integer number (24393782).

Almost surely, 2^73181343 is an apocalyptic number.

73181343 is a deficient number, since it is larger than the sum of its proper divisors (24393785).

73181343 is a wasteful number, since it uses less digits than its factorization.

73181343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24393784.

The product of its digits is 6048, while the sum is 30.

The square root of 73181343 is about 8554.6094592331. The cubic root of 73181343 is about 418.2797037470.

It can be divided in two parts, 7318134 and 3, that added together give a palindrome (7318137).

The spelling of 73181343 in words is "seventy-three million, one hundred eighty-one thousand, three hundred forty-three".