31300100212 has 12 divisors (see below), whose sum is σ = 56542116736. Its totient is φ = 15145209720.

The previous prime is 31300100197. The next prime is 31300100233. The reversal of 31300100212 is 21200100313.

It is a junction number, because it is equal to n+sod(n) for n = 31300100192 and 31300100201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126209958 + ... + 126210205.

Almost surely, 2^31300100212 is an apocalyptic number.

It is an amenable number.

31300100212 is a deficient number, since it is larger than the sum of its proper divisors (25242016524).

31300100212 is a wasteful number, since it uses less digits than its factorization.

31300100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252420198 (or 252420196 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31300100212 its reverse (21200100313), we get a palindrome (52500200525).

The spelling of 31300100212 in words is "thirty-one billion, three hundred million, one hundred thousand, two hundred twelve".