31211012012 has 6 divisors (see below), whose sum is σ = 54619271028. Its totient is φ = 15605506004.

The previous prime is 31211012003. The next prime is 31211012033. The reversal of 31211012012 is 21021011213.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3901376498 + ... + 3901376505.

It is an arithmetic number, because the mean of its divisors is an integer number (9103211838).

Almost surely, 2^31211012012 is an apocalyptic number.

It is an amenable number.

31211012012 is a deficient number, since it is larger than the sum of its proper divisors (23408259016).

31211012012 is a wasteful number, since it uses less digits than its factorization.

31211012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7802753007 (or 7802753005 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 31211012012 its reverse (21021011213), we get a palindrome (52232023225).

The spelling of 31211012012 in words is "thirty-one billion, two hundred eleven million, twelve thousand, twelve".