73320931 has 2 divisors, whose sum is σ = 73320932. Its totient is φ = 73320930.

The previous prime is 73320917. The next prime is 73320967. The reversal of 73320931 is 13902337.

It is a weak prime.

It is an emirp because it is prime and its reverse (13902337) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73320931 - 2⁵ = 73320899 is a prime.

It is a super-4 number, since 4×73320931⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 73320931.

It is not a weakly prime, because it can be changed into another prime (73320901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36660465 + 36660466.

It is an arithmetic number, because the mean of its divisors is an integer number (36660466).

Almost surely, 2^73320931 is an apocalyptic number.

73320931 is a deficient number, since it is larger than the sum of its proper divisors (1).

73320931 is an equidigital number, since it uses as much as digits as its factorization.

73320931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 73320931 is about 8562.7642149016. The cubic root of 73320931 is about 418.5454807029.

The spelling of 73320931 in words is "seventy-three million, three hundred twenty thousand, nine hundred thirty-one".