73304531 has 2 divisors, whose sum is σ = 73304532. Its totient is φ = 73304530.

The previous prime is 73304513. The next prime is 73304563. The reversal of 73304531 is 13540337.

Together with previous prime (73304513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73304531 - 2⁶ = 73304467 is a prime.

It is a super-2 number, since 2×73304531² = 10747108530259922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_4300838 and since 73304531 and 4300838 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73304531.

It is not a weakly prime, because it can be changed into another prime (73304501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36652265 + 36652266.

It is an arithmetic number, because the mean of its divisors is an integer number (36652266).

Almost surely, 2^73304531 is an apocalyptic number.

73304531 is a deficient number, since it is larger than the sum of its proper divisors (1).

73304531 is an equidigital number, since it uses as much as digits as its factorization.

73304531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 73304531 is about 8561.8065266625. The cubic root of 73304531 is about 418.5142724352.

Adding to 73304531 its reverse (13540337), we get a palindrome (86844868).

The spelling of 73304531 in words is "seventy-three million, three hundred four thousand, five hundred thirty-one".