31122140012 has 12 divisors (see below), whose sum is σ = 54466676040. Its totient is φ = 15560232576.

The previous prime is 31122139991. The next prime is 31122140053. The reversal of 31122140012 is 21004122113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121658 + ... + 277569.

It is an arithmetic number, because the mean of its divisors is an integer number (4538889670).

Almost surely, 2^31122140012 is an apocalyptic number.

It is an amenable number.

31122140012 is a deficient number, since it is larger than the sum of its proper divisors (23344536028).

31122140012 is a wasteful number, since it uses less digits than its factorization.

31122140012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418720 (or 418718 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31122140012 its reverse (21004122113), we get a palindrome (52126262125).

The spelling of 31122140012 in words is "thirty-one billion, one hundred twenty-two million, one hundred forty thousand, twelve".