31201030212 has 24 divisors (see below), whose sum is σ = 79420804512. Its totient is φ = 9454857600.

The previous prime is 31201030207. The next prime is 31201030243. The reversal of 31201030212 is 21203010213.

It is a junction number, because it is equal to n+sod(n) for n = 31201030191 and 31201030200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118185589 + ... + 118185852.

It is an arithmetic number, because the mean of its divisors is an integer number (3309200188).

Almost surely, 2^31201030212 is an apocalyptic number.

It is an amenable number.

31201030212 is an abundant number, since it is smaller than the sum of its proper divisors (48219774300).

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

31201030212 is a wasteful number, since it uses less digits than its factorization.

31201030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236371459 (or 236371457 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31201030212 its reverse (21203010213), we get a palindrome (52404040425).

The spelling of 31201030212 in words is "thirty-one billion, two hundred one million, thirty thousand, two hundred twelve".