323251505020 has 24 divisors (see below), whose sum is σ = 679260325968. Its totient is φ = 129218284800.

The previous prime is 323251505011. The next prime is 323251505099. The reversal of 323251505020 is 20505152323.

It is a self number, because there is not a number n which added to its sum of digits gives 323251505020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5112621 + ... + 5175460.

It is an arithmetic number, because the mean of its divisors is an integer number (28302513582).

Almost surely, 2^323251505020 is an apocalyptic number.

It is an amenable number.

323251505020 is an abundant number, since it is smaller than the sum of its proper divisors (356008820948).

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

323251505020 is a wasteful number, since it uses less digits than its factorization.

323251505020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10289661 (or 10289659 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 323251505020 its reverse (20505152323), we get a palindrome (343756657343).

The spelling of 323251505020 in words is "three hundred twenty-three billion, two hundred fifty-one million, five hundred five thousand, twenty".