2013101320 has 16 divisors (see below), whose sum is σ = 4529478060. Its totient is φ = 805240512.

The previous prime is 2013101309. The next prime is 2013101351. The reversal of 2013101320 is 231013102.

It can be written as a sum of positive squares in 2 ways, for example, as 1979716036 + 33385284 = 44494^2 + 5778^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2013101320.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25163727 + ... + 25163806.

Almost surely, 2^2013101320 is an apocalyptic number.

2013101320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2013101320 is an abundant number, since it is smaller than the sum of its proper divisors (2516376740).

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

2013101320 is a wasteful number, since it uses less digits than its factorization.

2013101320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50327544 (or 50327540 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2013101320 is about 44867.5976624557. The cubic root of 2013101320 is about 1262.6661692857. Note that the first 3 decimals are identical.

Adding to 2013101320 its reverse (231013102), we get a palindrome (2244114422).

The spelling of 2013101320 in words is "two billion, thirteen million, one hundred one thousand, three hundred twenty".