722263331 has 2 divisors, whose sum is σ = 722263332. Its totient is φ = 722263330.

The previous prime is 722263313. The next prime is 722263393. The reversal of 722263331 is 133362227.

722263331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (722263313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 722263331 - 2¹⁸ = 722001187 is a prime.

It is a super-2 number, since 2×722263331² = 1043328638614431122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 722263294 and 722263303.

It is not a weakly prime, because it can be changed into another prime (722263301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361131665 + 361131666.

It is an arithmetic number, because the mean of its divisors is an integer number (361131666).

Almost surely, 2^722263331 is an apocalyptic number.

722263331 is a deficient number, since it is larger than the sum of its proper divisors (1).

722263331 is an equidigital number, since it uses as much as digits as its factorization.

722263331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 29.

The square root of 722263331 is about 26874.9573208963. The cubic root of 722263331 is about 897.2191245601.

It can be divided in two parts, 72226 and 3331, that added together give a palindrome (75557).

The spelling of 722263331 in words is "seven hundred twenty-two million, two hundred sixty-three thousand, three hundred thirty-one".