131332113220 has 96 divisors (see below), whose sum is σ = 344838009600. Its totient is φ = 40817226240.

The previous prime is 131332113163. The next prime is 131332113221. The reversal of 131332113220 is 22311233131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 131332113191 and 131332113200.

It is not an unprimeable number, because it can be changed into a prime (131332113221) 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, 415282 + ... + 659638.

It is an arithmetic number, because the mean of its divisors is an integer number (3592062600).

Almost surely, 2^131332113220 is an apocalyptic number.

131332113220 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 131332113220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172419004800).

131332113220 is an abundant number, since it is smaller than the sum of its proper divisors (213505896380).

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

131332113220 is a wasteful number, since it uses less digits than its factorization.

131332113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244733 (or 244731 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131332113220 its reverse (22311233131), we get a palindrome (153643346351).

The spelling of 131332113220 in words is "one hundred thirty-one billion, three hundred thirty-two million, one hundred thirteen thousand, two hundred twenty".