722263231 has 2 divisors, whose sum is σ = 722263232. Its totient is φ = 722263230.

The previous prime is 722263219. The next prime is 722263301. The reversal of 722263231 is 132362227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 722263231 - 2¹⁵ = 722230463 is a prime.

It is a super-2 number, since 2×722263231² = 1043328349709118722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 722263231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722263211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361131615 + 361131616.

It is an arithmetic number, because the mean of its divisors is an integer number (361131616).

Almost surely, 2^722263231 is an apocalyptic number.

722263231 is a deficient number, since it is larger than the sum of its proper divisors (1).

722263231 is an equidigital number, since it uses as much as digits as its factorization.

722263231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 28.

The square root of 722263231 is about 26874.9554604282. The cubic root of 722263231 is about 897.2190831524.

It can be divided in two parts, 72226 and 3231, that added together give a palindrome (75457).

The spelling of 722263231 in words is "seven hundred twenty-two million, two hundred sixty-three thousand, two hundred thirty-one".