13031212313112 has 128 divisors (see below), whose sum is σ = 38519973273600. Its totient is φ = 3594436876800.

The previous prime is 13031212313081. The next prime is 13031212313137. The reversal of 13031212313112 is 21131321213031.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47565162 + ... + 47838342.

It is an arithmetic number, because the mean of its divisors is an integer number (300937291200).

Almost surely, 2^{13031212313112} is an apocalyptic number.

13031212313112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13031212313112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19259986636800).

13031212313112 is an abundant number, since it is smaller than the sum of its proper divisors (25488760960488).

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

13031212313112 is a wasteful number, since it uses less digits than its factorization.

13031212313112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283017 (or 283013 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 13031212313112 its reverse (21131321213031), we get a palindrome (34162533526143).

The spelling of 13031212313112 in words is "thirteen trillion, thirty-one billion, two hundred twelve million, three hundred thirteen thousand, one hundred twelve".