420303231 has 12 divisors (see below), whose sum is σ = 613364752. Its totient is φ = 277312896.

The previous prime is 420303217. The next prime is 420303253. The reversal of 420303231 is 132303024.

It is not a de Polignac number, because 420303231 - 2⁶ = 420303167 is a prime.

It is a super-2 number, since 2×420303231² = 353309611978078722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420303271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239851 + ... + 241596.

Almost surely, 2^420303231 is an apocalyptic number.

420303231 is a deficient number, since it is larger than the sum of its proper divisors (193061521).

420303231 is a wasteful number, since it uses less digits than its factorization.

420303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481550 (or 481547 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 420303231 is about 20501.2982759629. The cubic root of 420303231 is about 749.0674222122.

Adding to 420303231 its reverse (132303024), we get a palindrome (552606255).

The spelling of 420303231 in words is "four hundred twenty million, three hundred three thousand, two hundred thirty-one".