131113220320 has 96 divisors (see below), whose sum is σ = 321087836160. Its totient is φ = 50540689920.

The previous prime is 131113220311. The next prime is 131113220327. The reversal of 131113220320 is 23022311131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131113220327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1130139 + ... + 1240741.

It is an arithmetic number, because the mean of its divisors is an integer number (3344664960).

Almost surely, 2^131113220320 is an apocalyptic number.

131113220320 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 131113220320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160543918080).

131113220320 is an abundant number, since it is smaller than the sum of its proper divisors (189974615840).

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

131113220320 is a wasteful number, since it uses less digits than its factorization.

131113220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110888 (or 110880 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131113220320 its reverse (23022311131), we get a palindrome (154135531451).

The spelling of 131113220320 in words is "one hundred thirty-one billion, one hundred thirteen million, two hundred twenty thousand, three hundred twenty".