31100123212012 has 6 divisors (see below), whose sum is σ = 54425215621028. Its totient is φ = 15550061606004.

The previous prime is 31100123212003. The next prime is 31100123212019. The reversal of 31100123212012 is 21021232100113.

It is not an unprimeable number, because it can be changed into a prime (31100123212019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3887515401498 + ... + 3887515401505.

Almost surely, 2^{31100123212012} is an apocalyptic number.

It is an amenable number.

31100123212012 is a deficient number, since it is larger than the sum of its proper divisors (23325092409016).

31100123212012 is a wasteful number, since it uses less digits than its factorization.

31100123212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7775030803007 (or 7775030803005 counting only the distinct ones).

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

Adding to 31100123212012 its reverse (21021232100113), we get a palindrome (52121355312125).

The spelling of 31100123212012 in words is "thirty-one trillion, one hundred billion, one hundred twenty-three million, two hundred twelve thousand, twelve".