722216312 has 32 divisors (see below), whose sum is σ = 1395046800. Its totient is φ = 350304000.

The previous prime is 722216309. The next prime is 722216317. The reversal of 722216312 is 213612227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722216317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52562 + ... + 64862.

Almost surely, 2^722216312 is an apocalyptic number.

It is an amenable number.

722216312 is a deficient number, since it is larger than the sum of its proper divisors (672830488).

722216312 is a wasteful number, since it uses less digits than its factorization.

722216312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12527 (or 12523 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 722216312 is about 26874.0825331768. The cubic root of 722216312 is about 897.1996546246.

Adding to 722216312 its reverse (213612227), we get a palindrome (935828539).

The spelling of 722216312 in words is "seven hundred twenty-two million, two hundred sixteen thousand, three hundred twelve".