31221412214 has 8 divisors (see below), whose sum is σ = 46957674720. Its totient is φ = 15568853976.

The previous prime is 31221412207. The next prime is 31221412297. The reversal of 31221412214 is 41221412213.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31221412214.

It is a congruent number.

It is an unprimeable number.

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, 20925134 + ... + 20926625.

It is an arithmetic number, because the mean of its divisors is an integer number (5869709340).

Almost surely, 2^31221412214 is an apocalyptic number.

31221412214 is a deficient number, since it is larger than the sum of its proper divisors (15736262506).

31221412214 is a wasteful number, since it uses less digits than its factorization.

31221412214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41852134.

The product of its digits is 768, while the sum is 23.

Adding to 31221412214 its reverse (41221412213), we get a palindrome (72442824427).

Subtracting 31221412214 from its reverse (41221412213), we obtain a palindrome (9999999999).

The spelling of 31221412214 in words is "thirty-one billion, two hundred twenty-one million, four hundred twelve thousand, two hundred fourteen".