2131020020 has 48 divisors (see below), whose sum is σ = 4537064448. Its totient is φ = 840650880.

The previous prime is 2131020007. The next prime is 2131020049. The reversal of 2131020020 is 200201312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2131019983 and 2131020010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1803830 + ... + 1805010.

It is an arithmetic number, because the mean of its divisors is an integer number (94522176).

Almost surely, 2^2131020020 is an apocalyptic number.

2131020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131020020 is an abundant number, since it is smaller than the sum of its proper divisors (2406044428).

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

2131020020 is a wasteful number, since it uses less digits than its factorization.

2131020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2131020020 is about 46162.9723913008. The cubic root of 2131020020 is about 1286.8537029625.

Adding to 2131020020 its reverse (200201312), we get a palindrome (2331221332).

The spelling of 2131020020 in words is "two billion, one hundred thirty-one million, twenty thousand, twenty".