31312001133012 has 24 divisors (see below), whose sum is σ = 73127216383200. Its totient is φ = 10427922224416.

The previous prime is 31312001133011. The next prime is 31312001133107. The reversal of 31312001133012 is 21033110021313.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31312001133012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312001133011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176421962 + ... + 1176448577.

It is an arithmetic number, because the mean of its divisors is an integer number (3046967349300).

Almost surely, 2^{31312001133012} is an apocalyptic number.

It is an amenable number.

31312001133012 is an abundant number, since it is smaller than the sum of its proper divisors (41815215250188).

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

31312001133012 is a wasteful number, since it uses less digits than its factorization.

31312001133012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352871655 (or 2352871653 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31312001133012 its reverse (21033110021313), we get a palindrome (52345111154325).

The spelling of 31312001133012 in words is "thirty-one trillion, three hundred twelve billion, one million, one hundred thirty-three thousand, twelve".