31300020322212 has 48 divisors (see below), whose sum is σ = 74633698621440. Its totient is φ = 10204999555872.

The previous prime is 31300020322211. The next prime is 31300020322267. The reversal of 31300020322212 is 21222302000313.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31300020322211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16360762 + ... + 18173457.

It is an arithmetic number, because the mean of its divisors is an integer number (1554868721280).

Almost surely, 2^{31300020322212} is an apocalyptic number.

It is an amenable number.

31300020322212 is an abundant number, since it is smaller than the sum of its proper divisors (43333678299228).

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

31300020322212 is a wasteful number, since it uses less digits than its factorization.

31300020322212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34535880 (or 34535878 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31300020322212 its reverse (21222302000313), we get a palindrome (52522322322525).

The spelling of 31300020322212 in words is "thirty-one trillion, three hundred billion, twenty million, three hundred twenty-two thousand, two hundred twelve".