20001320310 has 32 divisors (see below), whose sum is σ = 48180321792. Its totient is φ = 5314001760.

The previous prime is 20001320309. The next prime is 20001320333. The reversal of 20001320310 is 1302310002.

It is a happy number.

It is a super-2 number, since 2×20001320310² (a number of 21 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1221964 + ... + 1238223.

It is an arithmetic number, because the mean of its divisors is an integer number (1505635056).

Almost surely, 2^20001320310 is an apocalyptic number.

20001320310 is an abundant number, since it is smaller than the sum of its proper divisors (28179001482).

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

20001320310 is a wasteful number, since it uses less digits than its factorization.

20001320310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460468.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20001320310 its reverse (1302310002), we get a palindrome (21303630312).

The spelling of 20001320310 in words is "twenty billion, one million, three hundred twenty thousand, three hundred ten".