131244345352020 has 48 divisors (see below), whose sum is σ = 367509078578880. Its totient is φ = 34996119561216.

The previous prime is 131244345351989. The next prime is 131244345352037. The reversal of 131244345352020 is 20253543442131.

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 131244345352020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73249090 + ... + 75019449.

It is an arithmetic number, because the mean of its divisors is an integer number (7656439137060).

Almost surely, 2^{131244345352020} is an apocalyptic number.

131244345352020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131244345352020 is an abundant number, since it is smaller than the sum of its proper divisors (236264733226860).

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

131244345352020 is a wasteful number, since it uses less digits than its factorization.

131244345352020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148283304 (or 148283302 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 131244345352020 its reverse (20253543442131), we get a palindrome (151497888794151).

The spelling of 131244345352020 in words is "one hundred thirty-one trillion, two hundred forty-four billion, three hundred forty-five million, three hundred fifty-two thousand, twenty".