31234222212 has 12 divisors (see below), whose sum is σ = 72879851856. Its totient is φ = 10411407400.

The previous prime is 31234222199. The next prime is 31234222219. The reversal of 31234222212 is 21222243213.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31234222219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301425914 + ... + 1301425937.

It is an arithmetic number, because the mean of its divisors is an integer number (6073320988).

Almost surely, 2^31234222212 is an apocalyptic number.

It is an amenable number.

31234222212 is an abundant number, since it is smaller than the sum of its proper divisors (41645629644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31234222212 is a wasteful number, since it uses less digits than its factorization.

31234222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602851858 (or 2602851856 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

Adding to 31234222212 its reverse (21222243213), we get a palindrome (52456465425).

The spelling of 31234222212 in words is "thirty-one billion, two hundred thirty-four million, two hundred twenty-two thousand, two hundred twelve".