31112133231312 has 60 divisors (see below), whose sum is σ = 99509442004960. Its totient is φ = 8889180922944.

The previous prime is 31112133231293. The next prime is 31112133231313. The reversal of 31112133231312 is 21313233121113.

31112133231312 is a `hidden beast` number, since 3 + 1 + 1 + 1 + 2 + 1 + 332 + 313 + 12 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112133231313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15432604762 + ... + 15432606777.

Almost surely, 2^{31112133231312} is an apocalyptic number.

It is an amenable number.

31112133231312 is an abundant number, since it is smaller than the sum of its proper divisors (68397308773648).

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

31112133231312 is a wasteful number, since it uses less digits than its factorization.

31112133231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30865211560 (or 30865211551 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

Adding to 31112133231312 its reverse (21313233121113), we get a palindrome (52425366352425).

The spelling of 31112133231312 in words is "thirty-one trillion, one hundred twelve billion, one hundred thirty-three million, two hundred thirty-one thousand, three hundred twelve".