323131212000 has 288 divisors, whose sum is σ = 1177791922944. Its totient is φ = 83839104000.

The previous prime is 323131211989. The next prime is 323131212017. The reversal of 323131212000 is 212131323.

323131212000 is a `hidden beast` number, since 3 + 231 + 312 + 120 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1210705 + ... + 1453295.

It is an arithmetic number, because the mean of its divisors is an integer number (4089555288).

Almost surely, 2^323131212000 is an apocalyptic number.

323131212000 is a gapful number since it is divisible by the number (30) 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 323131212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588895961472).

323131212000 is an abundant number, since it is smaller than the sum of its proper divisors (854660710944).

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

323131212000 is a wasteful number, since it uses less digits than its factorization.

323131212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242659 (or 242638 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 323131212000 its reverse (212131323), we get a palindrome (323343343323).

The spelling of 323131212000 in words is "three hundred twenty-three billion, one hundred thirty-one million, two hundred twelve thousand".