31212342222 has 8 divisors (see below), whose sum is σ = 62424684456. Its totient is φ = 10404114072.

The previous prime is 31212342173. The next prime is 31212342253. The reversal of 31212342222 is 22224321213.

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

31212342222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 31212342192 and 31212342201.

It is a congruent number.

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, 2601028513 + ... + 2601028524.

It is an arithmetic number, because the mean of its divisors is an integer number (7803085557).

Almost surely, 2^31212342222 is an apocalyptic number.

31212342222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31212342222 is a wasteful number, since it uses less digits than its factorization.

31212342222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5202057042.

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

Adding to 31212342222 its reverse (22224321213), we get a palindrome (53436663435).

The spelling of 31212342222 in words is "thirty-one billion, two hundred twelve million, three hundred forty-two thousand, two hundred twenty-two".