131561713788101 has 16 divisors (see below), whose sum is σ = 136319698092864. Its totient is φ = 126867115033344.

The previous prime is 131561713788097. The next prime is 131561713788139. The reversal of 131561713788101 is 101887317165131.

It is a cyclic number.

It is not a de Polignac number, because 131561713788101 - 2² = 131561713788097 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131561713778101) 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, 87739070 + ... + 89225936.

It is an arithmetic number, because the mean of its divisors is an integer number (8519981130804).

Almost surely, 2^{131561713788101} is an apocalyptic number.

It is an amenable number.

131561713788101 is a deficient number, since it is larger than the sum of its proper divisors (4757984304763).

131561713788101 is a wasteful number, since it uses less digits than its factorization.

131561713788101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508180.

The product of its (nonzero) digits is 846720, while the sum is 53.

The spelling of 131561713788101 in words is "one hundred thirty-one trillion, five hundred sixty-one billion, seven hundred thirteen million, seven hundred eighty-eight thousand, one hundred one".