72313213 has 8 divisors (see below), whose sum is σ = 84402432. Its totient is φ = 60663696.

The previous prime is 72313187. The next prime is 72313247. The reversal of 72313213 is 31231327.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72313213 - 2²¹ = 70216061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72313013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109570 + ... + 110227.

It is an arithmetic number, because the mean of its divisors is an integer number (10550304).

Almost surely, 2^72313213 is an apocalyptic number.

It is an amenable number.

72313213 is a deficient number, since it is larger than the sum of its proper divisors (12089219).

72313213 is a wasteful number, since it uses less digits than its factorization.

72313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219851.

The product of its digits is 756, while the sum is 22.

The square root of 72313213 is about 8503.7175987917. The cubic root of 72313213 is about 416.6191413172.

The spelling of 72313213 in words is "seventy-two million, three hundred thirteen thousand, two hundred thirteen".