13031553220 has 96 divisors (see below), whose sum is σ = 31881459456. Its totient is φ = 4381862400.

The previous prime is 13031553209. The next prime is 13031553247. The reversal of 13031553220 is 2235513031.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3183375 + ... + 3187465.

It is an arithmetic number, because the mean of its divisors is an integer number (332098536).

Almost surely, 2^13031553220 is an apocalyptic number.

13031553220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13031553220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15940729728).

13031553220 is an abundant number, since it is smaller than the sum of its proper divisors (18849906236).

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

13031553220 is a wasteful number, since it uses less digits than its factorization.

13031553220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541 (or 4539 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 13031553220 in words is "thirteen billion, thirty-one million, five hundred fifty-three thousand, two hundred twenty".