231244422 has 16 divisors (see below), whose sum is σ = 462827520. Its totient is φ = 77025032.

The previous prime is 231244397. The next prime is 231244427. The reversal of 231244422 is 224442132.

It is a super-2 number, since 2×231244422² = 106947965412228168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231244392 and 231244401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231244427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4758 + ... + 22025.

It is an arithmetic number, because the mean of its divisors is an integer number (28926720).

Almost surely, 2^231244422 is an apocalyptic number.

231244422 is an abundant number, since it is smaller than the sum of its proper divisors (231583098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231244422 is a wasteful number, since it uses less digits than its factorization.

231244422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28227.

The product of its digits is 3072, while the sum is 24.

The square root of 231244422 is about 15206.7229211293. The cubic root of 231244422 is about 613.7955778791.

Adding to 231244422 its reverse (224442132), we get a palindrome (455686554).

The spelling of 231244422 in words is "two hundred thirty-one million, two hundred forty-four thousand, four hundred twenty-two".