420223131 has 12 divisors (see below), whose sum is σ = 607927008. Its totient is φ = 279715824.

The previous prime is 420223123. The next prime is 420223151. The reversal of 420223131 is 131322024.

It is not a de Polignac number, because 420223131 - 2³ = 420223123 is a prime.

It is a super-2 number, since 2×420223131² = 353174959654886322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420223151) 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, 29875 + ... + 41628.

It is an arithmetic number, because the mean of its divisors is an integer number (50660584).

Almost surely, 2^420223131 is an apocalyptic number.

420223131 is a deficient number, since it is larger than the sum of its proper divisors (187703877).

420223131 is a wasteful number, since it uses less digits than its factorization.

420223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72162 (or 72159 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 420223131 is about 20499.3446480613. The cubic root of 420223131 is about 749.0198342582.

Adding to 420223131 its reverse (131322024), we get a palindrome (551545155).

The spelling of 420223131 in words is "four hundred twenty million, two hundred twenty-three thousand, one hundred thirty-one".