20310002020 has 96 divisors (see below), whose sum is σ = 53205175296. Its totient is φ = 6326832000.

The previous prime is 20310001997. The next prime is 20310002077. The reversal of 20310002020 is 2020001302.

It is a super-3 number, since 3×20310002020³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20310001988 and 20310002006.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4560795 + ... + 4565245.

It is an arithmetic number, because the mean of its divisors is an integer number (554220576).

Almost surely, 2^20310002020 is an apocalyptic number.

20310002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20310002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26602587648).

20310002020 is an abundant number, since it is smaller than the sum of its proper divisors (32895173276).

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

20310002020 is a wasteful number, since it uses less digits than its factorization.

20310002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7441 (or 7439 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20310002020 its reverse (2020001302), we get a palindrome (22330003322).

The spelling of 20310002020 in words is "twenty billion, three hundred ten million, two thousand, twenty".