31232123212 has 6 divisors (see below), whose sum is σ = 54656215628. Its totient is φ = 15616061604.

The previous prime is 31232123201. The next prime is 31232123249. The reversal of 31232123212 is 21232123213.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3904015398 + ... + 3904015405.

Almost surely, 2^31232123212 is an apocalyptic number.

It is an amenable number.

31232123212 is a deficient number, since it is larger than the sum of its proper divisors (23424092416).

31232123212 is a wasteful number, since it uses less digits than its factorization.

31232123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7808030807 (or 7808030805 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 31232123212 its reverse (21232123213), we get a palindrome (52464246425).

Subtracting from 31232123212 its reverse (21232123213), we obtain a palindrome (9999999999).

It can be divided in two parts, 312321 and 23212, that added together give a palindrome (335533).

The spelling of 31232123212 in words is "thirty-one billion, two hundred thirty-two million, one hundred twenty-three thousand, two hundred twelve".