420223431 has 8 divisors (see below), whose sum is σ = 560407680. Its totient is φ = 280094072.

The previous prime is 420223421. The next prime is 420223481. The reversal of 420223431 is 134322024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420223431 - 2¹⁸ = 419961287 is a prime.

It is a super-2 number, since 2×420223431² = 353175463922823522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420223398 and 420223407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420223411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10006 + ... + 30668.

It is an arithmetic number, because the mean of its divisors is an integer number (70050960).

Almost surely, 2^420223431 is an apocalyptic number.

420223431 is a deficient number, since it is larger than the sum of its proper divisors (140184249).

420223431 is a wasteful number, since it uses less digits than its factorization.

420223431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27445.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 420223431 is about 20499.3519653671. The cubic root of 420223431 is about 749.0200125015.

Adding to 420223431 its reverse (134322024), we get a palindrome (554545455).

The spelling of 420223431 in words is "four hundred twenty million, two hundred twenty-three thousand, four hundred thirty-one".