31302011021212 has 12 divisors (see below), whose sum is σ = 54779432059296. Its totient is φ = 15650744718560.

The previous prime is 31302011021173. The next prime is 31302011021243. The reversal of 31302011021212 is 21212011020313.

It is a super-2 number, since 2×31302011021212² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31302011021212.

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, 64927828 + ... + 65408155.

It is an arithmetic number, because the mean of its divisors is an integer number (4564952671608).

Almost surely, 2^{31302011021212} is an apocalyptic number.

It is an amenable number.

31302011021212 is a deficient number, since it is larger than the sum of its proper divisors (23477421038084).

31302011021212 is a wasteful number, since it uses less digits than its factorization.

31302011021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130396028 (or 130396026 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31302011021212 its reverse (21212011020313), we get a palindrome (52514022041525).

The spelling of 31302011021212 in words is "thirty-one trillion, three hundred two billion, eleven million, twenty-one thousand, two hundred twelve".