73211313 has 16 divisors (see below), whose sum is σ = 117432320. Its totient is φ = 39632976.

The previous prime is 73211291. The next prime is 73211317. The reversal of 73211313 is 31311237.

It is not a de Polignac number, because 73211313 - 2⁶ = 73211249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 73211313.

It is not an unprimeable number, because it can be changed into a prime (73211317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91345 + ... + 92142.

It is an arithmetic number, because the mean of its divisors is an integer number (7339520).

Almost surely, 2^73211313 is an apocalyptic number.

It is an amenable number.

73211313 is a deficient number, since it is larger than the sum of its proper divisors (44221007).

73211313 is a wasteful number, since it uses less digits than its factorization.

73211313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183516.

The product of its digits is 378, while the sum is 21.

The square root of 73211313 is about 8556.3609671402. The cubic root of 73211313 is about 418.3367954014.

The spelling of 73211313 in words is "seventy-three million, two hundred eleven thousand, three hundred thirteen".