31224642212 has 12 divisors (see below), whose sum is σ = 55458693360. Its totient is φ = 15379301256.

The previous prime is 31224642209. The next prime is 31224642233. The reversal of 31224642212 is 21224642213.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58254662 + ... + 58255197.

It is an arithmetic number, because the mean of its divisors is an integer number (4621557780).

Almost surely, 2^31224642212 is an apocalyptic number.

It is an amenable number.

31224642212 is a deficient number, since it is larger than the sum of its proper divisors (24234051148).

31224642212 is a wasteful number, since it uses less digits than its factorization.

31224642212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116509930 (or 116509928 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

Subtracting from 31224642212 its reverse (21224642213), we obtain a palindrome (9999999999).

The spelling of 31224642212 in words is "thirty-one billion, two hundred twenty-four million, six hundred forty-two thousand, two hundred twelve".