131340504040 has 32 divisors (see below), whose sum is σ = 297398416680. Its totient is φ = 52201573632.

The previous prime is 131340503993. The next prime is 131340504047. The reversal of 131340504040 is 40405043131.

It can be written as a sum of positive squares in 4 ways, for example, as 126811483236 + 4529020804 = 356106^2 + 67298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131340503996 and 131340504014.

It is not an unprimeable number, because it can be changed into a prime (131340504047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10450767 + ... + 10463326.

Almost surely, 2^131340504040 is an apocalyptic number.

131340504040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131340504040 is an abundant number, since it is smaller than the sum of its proper divisors (166057912640).

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

131340504040 is a wasteful number, since it uses less digits than its factorization.

131340504040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20914261 (or 20914257 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 131340504040 its reverse (40405043131), we get a palindrome (171745547171).

The spelling of 131340504040 in words is "one hundred thirty-one billion, three hundred forty million, five hundred four thousand, forty".