131075117 has 4 divisors (see below), whose sum is σ = 138785436. Its totient is φ = 123364800.

The previous prime is 131075089. The next prime is 131075123. The reversal of 131075117 is 711570131.

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 82828201 + 48246916 = 9101^2 + 6946^2 .

It is a cyclic number.

It is not a de Polignac number, because 131075117 - 2¹⁰ = 131074093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131075317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3855134 + ... + 3855167.

It is an arithmetic number, because the mean of its divisors is an integer number (34696359).

Almost surely, 2^131075117 is an apocalyptic number.

131075117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

131075117 is a deficient number, since it is larger than the sum of its proper divisors (7710319).

131075117 is an equidigital number, since it uses as much as digits as its factorization.

131075117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7710318.

The product of its (nonzero) digits is 735, while the sum is 26.

The square root of 131075117 is about 11448.8041733624. The cubic root of 131075117 is about 507.9723632329.

The spelling of 131075117 in words is "one hundred thirty-one million, seventy-five thousand, one hundred seventeen".