2113530520 has 32 divisors (see below), whose sum is σ = 4757512320. Its totient is φ = 845044480.

The previous prime is 2113530487. The next prime is 2113530547. The reversal of 2113530520 is 250353112.

It is a super-2 number, since 2×2113530520² = 8934022517942940800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113530491 and 2113530500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93444 + ... + 113836.

It is an arithmetic number, because the mean of its divisors is an integer number (148672260).

Almost surely, 2^2113530520 is an apocalyptic number.

2113530520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113530520 is an abundant number, since it is smaller than the sum of its proper divisors (2643981800).

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

2113530520 is a wasteful number, since it uses less digits than its factorization.

2113530520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22995 (or 22991 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2113530520 is about 45973.1499899670. The cubic root of 2113530520 is about 1283.3235811181.

Adding to 2113530520 its reverse (250353112), we get a palindrome (2363883632).

The spelling of 2113530520 in words is "two billion, one hundred thirteen million, five hundred thirty thousand, five hundred twenty".