722231369 has 2 divisors, whose sum is σ = 722231370. Its totient is φ = 722231368.

The previous prime is 722231357. The next prime is 722231431. The reversal of 722231369 is 963132227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 652291600 + 69939769 = 25540^2 + 8363^2 .

It is an emirp because it is prime and its reverse (963132227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722231369 - 2¹² = 722227273 is a prime.

It is a super-2 number, since 2×722231369² = 1043236300735228322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_37343591 and since 722231369 and 37343591 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (722231309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361115684 + 361115685.

It is an arithmetic number, because the mean of its divisors is an integer number (361115685).

Almost surely, 2^722231369 is an apocalyptic number.

It is an amenable number.

722231369 is a deficient number, since it is larger than the sum of its proper divisors (1).

722231369 is an equidigital number, since it uses as much as digits as its factorization.

722231369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 722231369 is about 26874.3626715128. The cubic root of 722231369 is about 897.2058896177.

The spelling of 722231369 in words is "seven hundred twenty-two million, two hundred thirty-one thousand, three hundred sixty-nine".