313023323131212 has 144 divisors (see below), whose sum is σ = 776251336089600. Its totient is φ = 98158970983680.

The previous prime is 313023323131199. The next prime is 313023323131219. The reversal of 313023323131212 is 212131323320313.

It is a self number, because there is not a number n which added to its sum of digits gives 313023323131212.

It is not an unprimeable number, because it can be changed into a prime (313023323131219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 470464989 + ... + 471129867.

It is an arithmetic number, because the mean of its divisors is an integer number (5390634278400).

Almost surely, 2^{313023323131212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313023323131212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388125668044800).

313023323131212 is an abundant number, since it is smaller than the sum of its proper divisors (463228012958388).

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

313023323131212 is a wasteful number, since it uses less digits than its factorization.

313023323131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665684 (or 665663 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 313023323131212 its reverse (212131323320313), we get a palindrome (525154646451525).

The spelling of 313023323131212 in words is "three hundred thirteen trillion, twenty-three billion, three hundred twenty-three million, one hundred thirty-one thousand, two hundred twelve".