131075775385 has 4 divisors (see below), whose sum is σ = 157290930468. Its totient is φ = 104860620304.

The previous prime is 131075775379. The next prime is 131075775407. The reversal of 131075775385 is 583577570131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91612760976 + 39463014409 = 302676^2 + 198653^2 .

It is a cyclic number.

It is not a de Polignac number, because 131075775385 - 2⁵ = 131075775353 is a prime.

It is a Duffinian 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, 13107577534 + ... + 13107577543.

It is an arithmetic number, because the mean of its divisors is an integer number (39322732617).

Almost surely, 2^131075775385 is an apocalyptic number.

It is an amenable number.

131075775385 is a deficient number, since it is larger than the sum of its proper divisors (26215155083).

131075775385 is an equidigital number, since it uses as much as digits as its factorization.

131075775385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26215155082.

The product of its (nonzero) digits is 3087000, while the sum is 52.

The spelling of 131075775385 in words is "one hundred thirty-one billion, seventy-five million, seven hundred seventy-five thousand, three hundred eighty-five".