131373126340 has 24 divisors (see below), whose sum is σ = 275947949592. Its totient is φ = 52536986880.

The previous prime is 131373126317. The next prime is 131373126389. The reversal of 131373126340 is 43621373131.

It can be written as a sum of positive squares in 4 ways, for example, as 2027881024 + 129345245316 = 45032^2 + 359646^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131373126296 and 131373126305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678391 + ... + 850270.

It is an arithmetic number, because the mean of its divisors is an integer number (11497831233).

Almost surely, 2^131373126340 is an apocalyptic number.

131373126340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131373126340 is an abundant number, since it is smaller than the sum of its proper divisors (144574823252).

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

131373126340 is a wasteful number, since it uses less digits than its factorization.

131373126340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532967 (or 1532965 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

Adding to 131373126340 its reverse (43621373131), we get a palindrome (174994499471).

The spelling of 131373126340 in words is "one hundred thirty-one billion, three hundred seventy-three million, one hundred twenty-six thousand, three hundred forty".