131434305531220 has 24 divisors (see below), whose sum is σ = 282430926306144. Its totient is φ = 51351077509536.

The previous prime is 131434305531169. The next prime is 131434305531281. The reversal of 131434305531220 is 22135503434131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131434305531220.

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, 76415293054 + ... + 76415294773.

It is an arithmetic number, because the mean of its divisors is an integer number (11767955262756).

Almost surely, 2^{131434305531220} is an apocalyptic number.

131434305531220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131434305531220 is an abundant number, since it is smaller than the sum of its proper divisors (150996620774924).

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

131434305531220 is a wasteful number, since it uses less digits than its factorization.

131434305531220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152830587879 (or 152830587877 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 131434305531220 its reverse (22135503434131), we get a palindrome (153569808965351).

The spelling of 131434305531220 in words is "one hundred thirty-one trillion, four hundred thirty-four billion, three hundred five million, five hundred thirty-one thousand, two hundred twenty".