115321002320 has 20 divisors (see below), whose sum is σ = 268121330580. Its totient is φ = 46128400896.

The previous prime is 115321002253. The next prime is 115321002331. The reversal of 115321002320 is 23200123511.

It can be written as a sum of positive squares in 2 ways, for example, as 14367378496 + 100953623824 = 119864^2 + 317732^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 115321002292 and 115321002301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720756185 + ... + 720756344.

It is an arithmetic number, because the mean of its divisors is an integer number (13406066529).

Almost surely, 2^115321002320 is an apocalyptic number.

115321002320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115321002320 is an abundant number, since it is smaller than the sum of its proper divisors (152800328260).

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

115321002320 is a wasteful number, since it uses less digits than its factorization.

115321002320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441512542 (or 1441512536 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 115321002320 its reverse (23200123511), we get a palindrome (138521125831).

The spelling of 115321002320 in words is "one hundred fifteen billion, three hundred twenty-one million, two thousand, three hundred twenty".