321212313312 has 48 divisors (see below), whose sum is σ = 919835263872. Its totient is φ = 97337064320.

The previous prime is 321212313281. The next prime is 321212313353. The reversal of 321212313312 is 213313212123.

It is a tau number, because it is divible by the number of its divisors (48).

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152088108 + ... + 152090219.

It is an arithmetic number, because the mean of its divisors is an integer number (19163234664).

Almost surely, 2^321212313312 is an apocalyptic number.

321212313312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321212313312 is an abundant number, since it is smaller than the sum of its proper divisors (598622950560).

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

321212313312 is a wasteful number, since it uses less digits than its factorization.

321212313312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304178351 (or 304178343 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 321212313312 its reverse (213313212123), we get a palindrome (534525525435).

The spelling of 321212313312 in words is "three hundred twenty-one billion, two hundred twelve million, three hundred thirteen thousand, three hundred twelve".