131540131132346 has 8 divisors (see below), whose sum is σ = 197336585673300. Its totient is φ = 65761269241248.

The previous prime is 131540131132331. The next prime is 131540131132433. The reversal of 131540131132346 is 643231131045131.

It can be written as a sum of positive squares in 2 ways, for example, as 91372358914321 + 40167772218025 = 9558889^2 + 6337805^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4398143771 + ... + 4398173678.

Almost surely, 2^{131540131132346} is an apocalyptic number.

131540131132346 is a deficient number, since it is larger than the sum of its proper divisors (65796454540954).

131540131132346 is an equidigital number, since it uses as much as digits as its factorization.

131540131132346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8796324928.

The product of its (nonzero) digits is 77760, while the sum is 38.

Adding to 131540131132346 its reverse (643231131045131), we get a palindrome (774771262177477).

The spelling of 131540131132346 in words is "one hundred thirty-one trillion, five hundred forty billion, one hundred thirty-one million, one hundred thirty-two thousand, three hundred forty-six".