20123313210 has 384 divisors, whose sum is σ = 72159220224. Its totient is φ = 3754874880.

The previous prime is 20123313187. The next prime is 20123313271. The reversal of 20123313210 is 1231332102.

20123313210 is a `hidden beast` number, since 2 + 0 + 12 + 331 + 321 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3330312 + ... + 3336348.

It is an arithmetic number, because the mean of its divisors is an integer number (187914636).

Almost surely, 2^20123313210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20123313210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36079610112).

20123313210 is an abundant number, since it is smaller than the sum of its proper divisors (52035907014).

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

20123313210 is a wasteful number, since it uses less digits than its factorization.

20123313210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6118 (or 6115 counting only the distinct ones).

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

Adding to 20123313210 its reverse (1231332102), we get a palindrome (21354645312).

It can be divided in two parts, 20123 and 313210, that added together give a palindrome (333333).

The spelling of 20123313210 in words is "twenty billion, one hundred twenty-three million, three hundred thirteen thousand, two hundred ten".