31003320212 has 24 divisors (see below), whose sum is σ = 56626987200. Its totient is φ = 14824472256.

The previous prime is 31003320197. The next prime is 31003320253. The reversal of 31003320212 is 21202330013.

It is a super-2 number, since 2×31003320212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 423239 + ... + 491057.

It is an arithmetic number, because the mean of its divisors is an integer number (2359457800).

Almost surely, 2^31003320212 is an apocalyptic number.

It is an amenable number.

31003320212 is a deficient number, since it is larger than the sum of its proper divisors (25623666988).

31003320212 is a wasteful number, since it uses less digits than its factorization.

31003320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72815 (or 72813 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31003320212 its reverse (21202330013), we get a palindrome (52205650225).

The spelling of 31003320212 in words is "thirty-one billion, three million, three hundred twenty thousand, two hundred twelve".