31302230212 has 24 divisors (see below), whose sum is σ = 59809502592. Its totient is φ = 14216215200.

The previous prime is 31302230147. The next prime is 31302230227. The reversal of 31302230212 is 21203220313.

It is a self number, because there is not a number n which added to its sum of digits gives 31302230212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249228 + ... + 353155.

It is an arithmetic number, because the mean of its divisors is an integer number (2492062608).

Almost surely, 2^31302230212 is an apocalyptic number.

It is an amenable number.

31302230212 is a deficient number, since it is larger than the sum of its proper divisors (28507272380).

31302230212 is a wasteful number, since it uses less digits than its factorization.

31302230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603579 (or 603577 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31302230212 its reverse (21203220313), we get a palindrome (52505450525).

The spelling of 31302230212 in words is "thirty-one billion, three hundred two million, two hundred thirty thousand, two hundred twelve".