323131140210420 has 144 divisors (see below), whose sum is σ = 983012103637200. Its totient is φ = 85917981339648.

The previous prime is 323131140210407. The next prime is 323131140210509. The reversal of 323131140210420 is 24012041131323.

323131140210420 is a `hidden beast` number, since 3 + 2 + 3 + 13 + 1 + 14 + 0 + 210 + 420 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 5398875308304 + 317732264902116 = 2323548^2 + 17825046^2 .

It is a super-2 number, since 2×323131140210420² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1840349754 + ... + 1840525326.

It is an arithmetic number, because the mean of its divisors is an integer number (6826472941925).

Almost surely, 2^{323131140210420} is an apocalyptic number.

323131140210420 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 323131140210420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491506051818600).

323131140210420 is an abundant number, since it is smaller than the sum of its proper divisors (659880963426780).

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

323131140210420 is a wasteful number, since it uses less digits than its factorization.

323131140210420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205234 (or 205229 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 323131140210420 its reverse (24012041131323), we get a palindrome (347143181341743).

The spelling of 323131140210420 in words is "three hundred twenty-three trillion, one hundred thirty-one billion, one hundred forty million, two hundred ten thousand, four hundred twenty".