13020231320 has 32 divisors (see below), whose sum is σ = 31018788000. Its totient is φ = 4901733888.

The previous prime is 13020231317. The next prime is 13020231359. The reversal of 13020231320 is 2313202031.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9573020 + ... + 9574379.

It is an arithmetic number, because the mean of its divisors is an integer number (969337125).

Almost surely, 2^13020231320 is an apocalyptic number.

13020231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13020231320 is an abundant number, since it is smaller than the sum of its proper divisors (17998556680).

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

13020231320 is a wasteful number, since it uses less digits than its factorization.

13020231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19147427 (or 19147423 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 13020231320 its reverse (2313202031), we get a palindrome (15333433351).

The spelling of 13020231320 in words is "thirteen billion, twenty million, two hundred thirty-one thousand, three hundred twenty".