31012110012 has 48 divisors (see below), whose sum is σ = 78444004352. Its totient is φ = 9478987200.

The previous prime is 31012110011. The next prime is 31012110091. The reversal of 31012110012 is 21001121013.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 31012110012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012110011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634708 + ... + 681819.

Almost surely, 2^31012110012 is an apocalyptic number.

It is an amenable number.

31012110012 is an abundant number, since it is smaller than the sum of its proper divisors (47431894340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31012110012 is a wasteful number, since it uses less digits than its factorization.

31012110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316698 (or 1316696 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 31012110012 its reverse (21001121013), we get a palindrome (52013231025).

The spelling of 31012110012 in words is "thirty-one billion, twelve million, one hundred ten thousand, twelve".