73315213 has 2 divisors, whose sum is σ = 73315214. Its totient is φ = 73315212.

The previous prime is 73315199. The next prime is 73315267. The reversal of 73315213 is 31251337.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43917129 + 29398084 = 6627^2 + 5422^2 .

It is a cyclic number.

It is not a de Polignac number, because 73315213 - 2⁹ = 73314701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73315013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36657606 + 36657607.

It is an arithmetic number, because the mean of its divisors is an integer number (36657607).

Almost surely, 2^73315213 is an apocalyptic number.

It is an amenable number.

73315213 is a deficient number, since it is larger than the sum of its proper divisors (1).

73315213 is an equidigital number, since it uses as much as digits as its factorization.

73315213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 25.

The square root of 73315213 is about 8562.4303208844. The cubic root of 73315213 is about 418.5346002024.

It can be divided in two parts, 7331 and 5213, that added together give a square (12544 = 112²).

The spelling of 73315213 in words is "seventy-three million, three hundred fifteen thousand, two hundred thirteen".