131503775605 has 16 divisors (see below), whose sum is σ = 158033512944. Its totient is φ = 105050483200.

The previous prime is 131503775597. The next prime is 131503775639. The reversal of 131503775605 is 506577305131.

It can be written as a sum of positive squares in 8 ways, for example, as 1183497604 + 130320278001 = 34402^2 + 360999^2 .

It is not a de Polignac number, because 131503775605 - 2³ = 131503775597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11333667 + ... + 11345263.

It is an arithmetic number, because the mean of its divisors is an integer number (9877094559).

Almost surely, 2^131503775605 is an apocalyptic number.

It is an amenable number.

131503775605 is a deficient number, since it is larger than the sum of its proper divisors (26529737339).

131503775605 is a wasteful number, since it uses less digits than its factorization.

131503775605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14696.

The product of its (nonzero) digits is 330750, while the sum is 43.

The spelling of 131503775605 in words is "one hundred thirty-one billion, five hundred three million, seven hundred seventy-five thousand, six hundred five".