7216873231 has 4 divisors (see below), whose sum is σ = 7530650352. Its totient is φ = 6903096112.

The previous prime is 7216873229. The next prime is 7216873267. The reversal of 7216873231 is 1323786127.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7216873231 - 2¹ = 7216873229 is a prime.

It is a super-2 number, since 2×7216873231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216873931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156888526 + ... + 156888571.

It is an arithmetic number, because the mean of its divisors is an integer number (1882662588).

Almost surely, 2^7216873231 is an apocalyptic number.

7216873231 is a deficient number, since it is larger than the sum of its proper divisors (313777121).

7216873231 is a wasteful number, since it uses less digits than its factorization.

7216873231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313777120.

The product of its digits is 84672, while the sum is 40.

The square root of 7216873231 is about 84952.1820261257. The cubic root of 7216873231 is about 1932.4860114340.

The spelling of 7216873231 in words is "seven billion, two hundred sixteen million, eight hundred seventy-three thousand, two hundred thirty-one".