423220351 has 2 divisors, whose sum is σ = 423220352. Its totient is φ = 423220350.

The previous prime is 423220337. The next prime is 423220361. The reversal of 423220351 is 153022324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423220351 - 2⁷ = 423220223 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423220331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211610175 + 211610176.

It is an arithmetic number, because the mean of its divisors is an integer number (211610176).

Almost surely, 2^423220351 is an apocalyptic number.

423220351 is a deficient number, since it is larger than the sum of its proper divisors (1).

423220351 is an equidigital number, since it uses as much as digits as its factorization.

423220351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 423220351 is about 20572.3200198714. The cubic root of 423220351 is about 750.7963990691.

Adding to 423220351 its reverse (153022324), we get a palindrome (576242675).

The spelling of 423220351 in words is "four hundred twenty-three million, two hundred twenty thousand, three hundred fifty-one".