20323113210 has 96 divisors (see below), whose sum is σ = 54414771840. Its totient is φ = 5258784384.

The previous prime is 20323113197. The next prime is 20323113259. The reversal of 20323113210 is 1231132302.

20323113210 is a `hidden beast` number, since 2 + 0 + 32 + 311 + 321 + 0 = 666.

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

It is a Curzon 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 47 ways as a sum of consecutive naturals, for example, 1254019 + ... + 1270121.

It is an arithmetic number, because the mean of its divisors is an integer number (566820540).

Almost surely, 2^20323113210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323113210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27207385920).

20323113210 is an abundant number, since it is smaller than the sum of its proper divisors (34091658630).

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

20323113210 is a wasteful number, since it uses less digits than its factorization.

20323113210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16532 (or 16529 counting only the distinct ones).

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

Adding to 20323113210 its reverse (1231132302), we get a palindrome (21554245512).

The spelling of 20323113210 in words is "twenty billion, three hundred twenty-three million, one hundred thirteen thousand, two hundred ten".