131320673240 has 16 divisors (see below), whose sum is σ = 295471514880. Its totient is φ = 52528269280.

The previous prime is 131320673207. The next prime is 131320673243. The reversal of 131320673240 is 42376023131.

It is a junction number, because it is equal to n+sod(n) for n = 131320673197 and 131320673206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320673243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641508376 + ... + 1641508455.

It is an arithmetic number, because the mean of its divisors is an integer number (18466969680).

Almost surely, 2^131320673240 is an apocalyptic number.

131320673240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131320673240 is an abundant number, since it is smaller than the sum of its proper divisors (164150841640).

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

131320673240 is a wasteful number, since it uses less digits than its factorization.

131320673240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283016842 (or 3283016838 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

Adding to 131320673240 its reverse (42376023131), we get a palindrome (173696696371).

The spelling of 131320673240 in words is "one hundred thirty-one billion, three hundred twenty million, six hundred seventy-three thousand, two hundred forty".