2113203020 has 48 divisors (see below), whose sum is σ = 4709184480. Its totient is φ = 793795584.

The previous prime is 2113203019. The next prime is 2113203023. The reversal of 2113203020 is 203023112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2113202986 and 2113203004.

It is not an unprimeable number, because it can be changed into a prime (2113203023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152126 + ... + 165434.

It is an arithmetic number, because the mean of its divisors is an integer number (98108010).

Almost surely, 2^2113203020 is an apocalyptic number.

2113203020 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 2113203020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2354592240).

2113203020 is an abundant number, since it is smaller than the sum of its proper divisors (2595981460).

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

2113203020 is a wasteful number, since it uses less digits than its factorization.

2113203020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13802 (or 13800 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2113203020 is about 45969.5879903225. The cubic root of 2113203020 is about 1283.2572923217.

Adding to 2113203020 its reverse (203023112), we get a palindrome (2316226132).

The spelling of 2113203020 in words is "two billion, one hundred thirteen million, two hundred three thousand, twenty".