73213 has 4 divisors (see below), whose sum is σ = 83680. Its totient is φ = 62748.

The previous prime is 73189. The next prime is 73237. The reversal of 73213 is 31237.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (73189) and next prime (73237).

It is not a de Polignac number, because 73213 - 2⁵ = 73181 is a prime.

It is a Duffinian number.

73213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73243) 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, 5223 + ... + 5236.

It is an arithmetic number, because the mean of its divisors is an integer number (20920).

2⁷³²¹³ is an apocalyptic number.

It is an amenable number.

73213 is a deficient number, since it is larger than the sum of its proper divisors (10467).

73213 is a wasteful number, since it uses less digits than its factorization.

73213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10466.

The product of its digits is 126, while the sum is 16.

The square root of 73213 is about 270.5790087941. The cubic root of 73213 is about 41.8340008606.

The spelling of 73213 in words is "seventy-three thousand, two hundred thirteen".