722338231 has 2 divisors, whose sum is σ = 722338232. Its totient is φ = 722338230.

The previous prime is 722338229. The next prime is 722338237. The reversal of 722338231 is 132833227.

It is a weak prime.

It is an emirp because it is prime and its reverse (132833227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722338231 - 2¹ = 722338229 is a prime.

It is a super-2 number, since 2×722338231² = 1043545039928418722, which contains 22 as substring.

Together with 722338229, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 722338193 and 722338202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722338237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361169115 + 361169116.

It is an arithmetic number, because the mean of its divisors is an integer number (361169116).

Almost surely, 2^722338231 is an apocalyptic number.

722338231 is a deficient number, since it is larger than the sum of its proper divisors (1).

722338231 is an equidigital number, since it uses as much as digits as its factorization.

722338231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 722338231 is about 26876.3507753564. The cubic root of 722338231 is about 897.2501378977.

It can be divided in two parts, 7223 and 38231, that added together give a palindrome (45454).

The spelling of 722338231 in words is "seven hundred twenty-two million, three hundred thirty-eight thousand, two hundred thirty-one".