722130311 has 4 divisors (see below), whose sum is σ = 825291792. Its totient is φ = 618968832.

The previous prime is 722130307. The next prime is 722130319. The reversal of 722130311 is 113031227.

722130311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 722130311 - 2² = 722130307 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 (722130319) 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, 51580730 + ... + 51580743.

It is an arithmetic number, because the mean of its divisors is an integer number (206322948).

Almost surely, 2^722130311 is an apocalyptic number.

722130311 is a deficient number, since it is larger than the sum of its proper divisors (103161481).

722130311 is a wasteful number, since it uses less digits than its factorization.

722130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103161480.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 722130311 is about 26872.4824123117. The cubic root of 722130311 is about 897.1640405806.

Adding to 722130311 its reverse (113031227), we get a palindrome (835161538).

The spelling of 722130311 in words is "seven hundred twenty-two million, one hundred thirty thousand, three hundred eleven".