73108531 has 4 divisors (see below), whose sum is σ = 73208200. Its totient is φ = 73008864.

The previous prime is 73108459. The next prime is 73108537. The reversal of 73108531 is 13580137.

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

It is a cyclic number.

It is not a de Polignac number, because 73108531 - 2¹⁹ = 72584243 is a prime.

It is a super-2 number, since 2×73108531² = 10689714609955922, which contains 22 as substring.

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 73108531.

It is not an unprimeable number, because it can be changed into a prime (73108537) 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, 48726 + ... + 50203.

It is an arithmetic number, because the mean of its divisors is an integer number (18302050).

Almost surely, 2^73108531 is an apocalyptic number.

73108531 is a deficient number, since it is larger than the sum of its proper divisors (99669).

73108531 is an equidigital number, since it uses as much as digits as its factorization.

73108531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99668.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 73108531 is about 8550.3526827845. The cubic root of 73108531 is about 418.1409348257.

Adding to 73108531 its reverse (13580137), we get a palindrome (86688668).

The spelling of 73108531 in words is "seventy-three million, one hundred eight thousand, five hundred thirty-one".