31301330212 has 12 divisors (see below), whose sum is σ = 55195476336. Its totient is φ = 15531194120.

The previous prime is 31301330191. The next prime is 31301330219. The reversal of 31301330212 is 21203310313.

It is a self number, because there is not a number n which added to its sum of digits gives 31301330212.

It is not an unprimeable number, because it can be changed into a prime (31301330219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29867158 + ... + 29868205.

It is an arithmetic number, because the mean of its divisors is an integer number (4599623028).

Almost surely, 2^31301330212 is an apocalyptic number.

It is an amenable number.

31301330212 is a deficient number, since it is larger than the sum of its proper divisors (23894146124).

31301330212 is a wasteful number, since it uses less digits than its factorization.

31301330212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59735498 (or 59735496 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31301330212 its reverse (21203310313), we get a palindrome (52504640525).

The spelling of 31301330212 in words is "thirty-one billion, three hundred one million, three hundred thirty thousand, two hundred twelve".