422543131 has 4 divisors (see below), whose sum is σ = 424296664. Its totient is φ = 420789600.

The previous prime is 422543087. The next prime is 422543141. The reversal of 422543131 is 131345224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422543131 - 2⁷ = 422543003 is a prime.

It is a super-2 number, since 2×422543131² = 357085395110566322, 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 = 422543096 and 422543105.

It is not an unprimeable number, because it can be changed into a prime (422543141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876405 + ... + 876886.

It is an arithmetic number, because the mean of its divisors is an integer number (106074166).

Almost surely, 2^422543131 is an apocalyptic number.

422543131 is a deficient number, since it is larger than the sum of its proper divisors (1753533).

422543131 is a wasteful number, since it uses less digits than its factorization.

422543131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753532.

The product of its digits is 2880, while the sum is 25.

The square root of 422543131 is about 20555.8539350716. The cubic root of 422543131 is about 750.3957206516.

Adding to 422543131 its reverse (131345224), we get a palindrome (553888355).

The spelling of 422543131 in words is "four hundred twenty-two million, five hundred forty-three thousand, one hundred thirty-one".