31320120030212 has 24 divisors (see below), whose sum is σ = 59367573022296. Its totient is φ = 14371882553088.

The previous prime is 31320120030193. The next prime is 31320120030223. The reversal of 31320120030212 is 21203002102313.

It can be written as a sum of positive squares in 4 ways, for example, as 3541148658436 + 27778971371776 = 1881794^2 + 5270576^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1740771353 + ... + 1740789344.

It is an arithmetic number, because the mean of its divisors is an integer number (2473648875929).

Almost surely, 2^{31320120030212} is an apocalyptic number.

It is an amenable number.

31320120030212 is a deficient number, since it is larger than the sum of its proper divisors (28047452992084).

31320120030212 is a wasteful number, since it uses less digits than its factorization.

31320120030212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481560887 (or 3481560885 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31320120030212 its reverse (21203002102313), we get a palindrome (52523122132525).

The spelling of 31320120030212 in words is "thirty-one trillion, three hundred twenty billion, one hundred twenty million, thirty thousand, two hundred twelve".