13031331220 has 24 divisors (see below), whose sum is σ = 27398448000. Its totient is φ = 5206312992.

The previous prime is 13031331211. The next prime is 13031331263. The reversal of 13031331220 is 2213313031.

It is a congruent number.

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, 371520 + ... + 405079.

It is an arithmetic number, because the mean of its divisors is an integer number (1141602000).

Almost surely, 2^13031331220 is an apocalyptic number.

13031331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13031331220 is an abundant number, since it is smaller than the sum of its proper divisors (14367116780).

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

13031331220 is a wasteful number, since it uses less digits than its factorization.

13031331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777447 (or 777445 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13031331220 its reverse (2213313031), we get a palindrome (15244644251).

The spelling of 13031331220 in words is "thirteen billion, thirty-one million, three hundred thirty-one thousand, two hundred twenty".