423122251 has 2 divisors, whose sum is σ = 423122252. Its totient is φ = 423122250.

The previous prime is 423122243. The next prime is 423122263. The reversal of 423122251 is 152221324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423122251 - 2³ = 423122243 is a prime.

It is not a weakly prime, because it can be changed into another prime (423122201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211561125 + 211561126.

It is an arithmetic number, because the mean of its divisors is an integer number (211561126).

Almost surely, 2^423122251 is an apocalyptic number.

423122251 is a deficient number, since it is larger than the sum of its proper divisors (1).

423122251 is an equidigital number, since it uses as much as digits as its factorization.

423122251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 22.

The square root of 423122251 is about 20569.9356100110. The cubic root of 423122251 is about 750.7383845162.

Adding to 423122251 its reverse (152221324), we get a palindrome (575343575).

The spelling of 423122251 in words is "four hundred twenty-three million, one hundred twenty-two thousand, two hundred fifty-one".