420324231 has 12 divisors (see below), whose sum is σ = 580427432. Its totient is φ = 270551904.

The previous prime is 420324227. The next prime is 420324239. The reversal of 420324231 is 132423024.

It is not a de Polignac number, because 420324231 - 2² = 420324227 is a prime.

It is a super-2 number, since 2×420324231² = 353344918331482722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420324198 and 420324207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420324239) 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, 80776 + ... + 85821.

Almost surely, 2^420324231 is an apocalyptic number.

420324231 is a deficient number, since it is larger than the sum of its proper divisors (160103201).

420324231 is a wasteful number, since it uses less digits than its factorization.

420324231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166658 (or 166629 counting only the distinct ones).

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

The square root of 420324231 is about 20501.8104322521. The cubic root of 420324231 is about 749.0798974545.

Adding to 420324231 its reverse (132423024), we get a palindrome (552747255).

The spelling of 420324231 in words is "four hundred twenty million, three hundred twenty-four thousand, two hundred thirty-one".