622723331 has 2 divisors, whose sum is σ = 622723332. Its totient is φ = 622723330.

The previous prime is 622723327. The next prime is 622723421. The reversal of 622723331 is 133327226.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 622723331 - 2² = 622723327 is a prime.

It is a super-2 number, since 2×622723331² = 775568693943471122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 622723294 and 622723303.

It is not a weakly prime, because it can be changed into another prime (622723631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311361665 + 311361666.

It is an arithmetic number, because the mean of its divisors is an integer number (311361666).

Almost surely, 2^622723331 is an apocalyptic number.

622723331 is a deficient number, since it is larger than the sum of its proper divisors (1).

622723331 is an equidigital number, since it uses as much as digits as its factorization.

622723331 is an evil number, because the sum of its binary digits is even.

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

The square root of 622723331 is about 24954.4250785307. The cubic root of 622723331 is about 853.9485637784.

The spelling of 622723331 in words is "six hundred twenty-two million, seven hundred twenty-three thousand, three hundred thirty-one".