13031203320 has 128 divisors (see below), whose sum is σ = 44447673600. Its totient is φ = 3394161792.

The previous prime is 13031203319. The next prime is 13031203321. The reversal of 13031203320 is 2330213031.

13031203320 is a `hidden beast` number, since 1 + 30 + 312 + 0 + 3 + 320 = 666.

It is an interprime number because it is at equal distance from previous prime (13031203319) and next prime (13031203321).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13031203293 and 13031203302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031203321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93862 + ... + 186741.

It is an arithmetic number, because the mean of its divisors is an integer number (347247450).

Almost surely, 2^13031203320 is an apocalyptic number.

13031203320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13031203320 is an abundant number, since it is smaller than the sum of its proper divisors (31416470280).

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

13031203320 is a wasteful number, since it uses less digits than its factorization.

13031203320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280666 (or 280656 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 13031203320 its reverse (2330213031), we get a palindrome (15361416351).

The spelling of 13031203320 in words is "thirteen billion, thirty-one million, two hundred three thousand, three hundred twenty".