231440011222 has 8 divisors (see below), whose sum is σ = 396754304976. Its totient is φ = 99188576232.

The previous prime is 231440011193. The next prime is 231440011291. The reversal of 231440011222 is 222110044132.

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

It is a junction number, because it is equal to n+sod(n) for n = 231440011193 and 231440011202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8265714673 + ... + 8265714700.

It is an arithmetic number, because the mean of its divisors is an integer number (49594288122).

Almost surely, 2^231440011222 is an apocalyptic number.

231440011222 is a deficient number, since it is larger than the sum of its proper divisors (165314293754).

231440011222 is a wasteful number, since it uses less digits than its factorization.

231440011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16531429382.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 231440011222 its reverse (222110044132), we get a palindrome (453550055354).

The spelling of 231440011222 in words is "two hundred thirty-one billion, four hundred forty million, eleven thousand, two hundred twenty-two".