423220131 has 12 divisors (see below), whose sum is σ = 611534352. Its totient is φ = 282046896.

The previous prime is 423220129. The next prime is 423220139. The reversal of 423220131 is 131022324.

It is not a de Polignac number, because 423220131 - 2¹ = 423220129 is a prime.

It is a super-2 number, since 2×423220131² = 358230558567314322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423220139) 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, 25945 + ... + 38981.

It is an arithmetic number, because the mean of its divisors is an integer number (50961196).

Almost surely, 2^423220131 is an apocalyptic number.

423220131 is a deficient number, since it is larger than the sum of its proper divisors (188314221).

423220131 is a wasteful number, since it uses less digits than its factorization.

423220131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16650 (or 16647 counting only the distinct ones).

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

The square root of 423220131 is about 20572.3146728802. The cubic root of 423220131 is about 750.7962689751.

Adding to 423220131 its reverse (131022324), we get a palindrome (554242455).

The spelling of 423220131 in words is "four hundred twenty-three million, two hundred twenty thousand, one hundred thirty-one".