422331231 has 8 divisors (see below), whose sum is σ = 643552384. Its totient is φ = 241332120.

The previous prime is 422331229. The next prime is 422331241. The reversal of 422331231 is 132133224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 422331231 - 2¹ = 422331229 is a prime.

It is a super-2 number, since 2×422331231² = 356727337355950722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 20111011 = 422331231 / (4 + 2 + 2 + 3 + 3 + 1 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422331198 and 422331207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422331211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10055485 + ... + 10055526.

It is an arithmetic number, because the mean of its divisors is an integer number (80444048).

Almost surely, 2^422331231 is an apocalyptic number.

422331231 is a deficient number, since it is larger than the sum of its proper divisors (221221153).

422331231 is a wasteful number, since it uses less digits than its factorization.

422331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20111021.

The product of its digits is 864, while the sum is 21.

The square root of 422331231 is about 20550.6990392055. The cubic root of 422331231 is about 750.2702617109.

Adding to 422331231 its reverse (132133224), we get a palindrome (554464455).

The spelling of 422331231 in words is "four hundred twenty-two million, three hundred thirty-one thousand, two hundred thirty-one".