323121310020 has 72 divisors (see below), whose sum is σ = 980260748376. Its totient is φ = 86154596352.

The previous prime is 323121309997. The next prime is 323121310027. The reversal of 323121310020 is 20013121323.

323121310020 is a `hidden beast` number, since 323 + 12 + 1 + 310 + 0 + 20 = 666.

323121310020 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 83054628864 + 240066681156 = 288192^2 + 489966^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 323121309975 and 323121310002.

It is not an unprimeable number, because it can be changed into a prime (323121310027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1338084 + ... + 1560996.

Almost surely, 2^323121310020 is an apocalyptic number.

323121310020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

323121310020 is an abundant number, since it is smaller than the sum of its proper divisors (657139438356).

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

323121310020 is a wasteful number, since it uses less digits than its factorization.

323121310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230981 (or 230976 counting only the distinct ones).

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

Adding to 323121310020 its reverse (20013121323), we get a palindrome (343134431343).

The spelling of 323121310020 in words is "three hundred twenty-three billion, one hundred twenty-one million, three hundred ten thousand, twenty".