31120322212 has 12 divisors (see below), whose sum is σ = 62240644480. Its totient is φ = 13337280936.

The previous prime is 31120322173. The next prime is 31120322257. The reversal of 31120322212 is 21222302113.

31120322212 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 31120322212.

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, 555720012 + ... + 555720067.

Almost surely, 2^31120322212 is an apocalyptic number.

It is an amenable number.

31120322212 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.

31120322212 is a wasteful number, since it uses less digits than its factorization.

31120322212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111440090 (or 1111440088 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31120322212 its reverse (21222302113), we get a palindrome (52342624325).

The spelling of 31120322212 in words is "thirty-one billion, one hundred twenty million, three hundred twenty-two thousand, two hundred twelve".