231422422 has 48 divisors (see below), whose sum is σ = 442794240. Its totient is φ = 88775280.

The previous prime is 231422417. The next prime is 231422423. The reversal of 231422422 is 224224132.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 231422393 and 231422402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231422423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112479 + ... + 114517.

It is an arithmetic number, because the mean of its divisors is an integer number (9224880).

Almost surely, 2^231422422 is an apocalyptic number.

231422422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231422422 is a deficient number, since it is larger than the sum of its proper divisors (211371818).

231422422 is a wasteful number, since it uses less digits than its factorization.

231422422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137 (or 2126 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 231422422 is about 15212.5744698259. The cubic root of 231422422 is about 613.9530268542.

Adding to 231422422 its reverse (224224132), we get a palindrome (455646554).

The spelling of 231422422 in words is "two hundred thirty-one million, four hundred twenty-two thousand, four hundred twenty-two".