131435222320220 has 48 divisors (see below), whose sum is σ = 339709497693888. Its totient is φ = 41597081349120.

The previous prime is 131435222320121. The next prime is 131435222320229. The reversal of 131435222320220 is 22023222534131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131435222320229) 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, 36108575741 + ... + 36108579380.

It is an arithmetic number, because the mean of its divisors is an integer number (7077281201956).

Almost surely, 2^{131435222320220} is an apocalyptic number.

131435222320220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131435222320220 is an abundant number, since it is smaller than the sum of its proper divisors (208274275373668).

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

131435222320220 is a wasteful number, since it uses less digits than its factorization.

131435222320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72217155150 (or 72217155148 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 131435222320220 its reverse (22023222534131), we get a palindrome (153458444854351).

The spelling of 131435222320220 in words is "one hundred thirty-one trillion, four hundred thirty-five billion, two hundred twenty-two million, three hundred twenty thousand, two hundred twenty".