31356424222212 has 48 divisors (see below), whose sum is σ = 73518439115520. Its totient is φ = 10401704990208.

The previous prime is 31356424222199. The next prime is 31356424222273. The reversal of 31356424222212 is 21222242465313.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 933978 + ... + 7974030.

It is an arithmetic number, because the mean of its divisors is an integer number (1531634148240).

Almost surely, 2^{31356424222212} is an apocalyptic number.

It is an amenable number.

31356424222212 is an abundant number, since it is smaller than the sum of its proper divisors (42162014893308).

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

31356424222212 is a wasteful number, since it uses less digits than its factorization.

31356424222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7041852 (or 7041850 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

Adding to 31356424222212 its reverse (21222242465313), we get a palindrome (52578666687525).

The spelling of 31356424222212 in words is "thirty-one trillion, three hundred fifty-six billion, four hundred twenty-four million, two hundred twenty-two thousand, two hundred twelve".