20130002320 has 40 divisors (see below), whose sum is σ = 47595525120. Its totient is φ = 7915524480.

The previous prime is 20130002317. The next prime is 20130002359. The reversal of 20130002320 is 2320003102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 20130002320.

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, 2127696 + ... + 2137135.

It is an arithmetic number, because the mean of its divisors is an integer number (1189888128).

Almost surely, 2^20130002320 is an apocalyptic number.

20130002320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130002320 is an abundant number, since it is smaller than the sum of its proper divisors (27465522800).

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

20130002320 is a wasteful number, since it uses less digits than its factorization.

20130002320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264903 (or 4264897 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20130002320 its reverse (2320003102), we get a palindrome (22450005422).

The spelling of 20130002320 in words is "twenty billion, one hundred thirty million, two thousand, three hundred twenty".