131020231044340 has 48 divisors (see below), whose sum is σ = 303127274467584. Its totient is φ = 47172000368000.

The previous prime is 131020231044323. The next prime is 131020231044349. The reversal of 131020231044340 is 43440132020131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131020231044299 and 131020231044308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131020231044349) 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, 2948227804 + ... + 2948272243.

It is an arithmetic number, because the mean of its divisors is an integer number (6315151551408).

Almost surely, 2^{131020231044340} is an apocalyptic number.

131020231044340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131020231044340 is an abundant number, since it is smaller than the sum of its proper divisors (172107043423244).

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

131020231044340 is a wasteful number, since it uses less digits than its factorization.

131020231044340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5896500168 (or 5896500166 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 131020231044340 its reverse (43440132020131), we get a palindrome (174460363064471).

The spelling of 131020231044340 in words is "one hundred thirty-one trillion, twenty billion, two hundred thirty-one million, forty-four thousand, three hundred forty".