320131312212 has 48 divisors (see below), whose sum is σ = 750572710272. Its totient is φ = 106197025920.

The previous prime is 320131312183. The next prime is 320131312217. The reversal of 320131312212 is 212213131023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131312217) 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, 3095662 + ... + 3197402.

It is an arithmetic number, because the mean of its divisors is an integer number (15636931464).

Almost surely, 2^320131312212 is an apocalyptic number.

It is an amenable number.

320131312212 is an abundant number, since it is smaller than the sum of its proper divisors (430441398060).

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

320131312212 is a wasteful number, since it uses less digits than its factorization.

320131312212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103008 (or 103006 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 320131312212 its reverse (212213131023), we get a palindrome (532344443235).

The spelling of 320131312212 in words is "three hundred twenty billion, one hundred thirty-one million, three hundred twelve thousand, two hundred twelve".