131326117 has 4 divisors (see below), whose sum is σ = 141428140. Its totient is φ = 121224096.

The previous prime is 131326109. The next prime is 131326121. The reversal of 131326117 is 711623131.

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 27102436 + 104223681 = 5206^2 + 10209^2 .

It is a cyclic number.

It is not a de Polignac number, because 131326117 - 2³ = 131326109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131326091 and 131326100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131326177) 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, 5050992 + ... + 5051017.

It is an arithmetic number, because the mean of its divisors is an integer number (35357035).

Almost surely, 2^131326117 is an apocalyptic number.

It is an amenable number.

131326117 is a deficient number, since it is larger than the sum of its proper divisors (10102023).

131326117 is a wasteful number, since it uses less digits than its factorization.

131326117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102022.

The product of its digits is 756, while the sum is 25.

The square root of 131326117 is about 11459.7607741174. The cubic root of 131326117 is about 508.2964007447.

Adding to 131326117 its reverse (711623131), we get a palindrome (842949248).

It can be divided in two parts, 1313 and 26117, that multiplied together give a triangular number (34291621 = T₈₂₈₁).

The spelling of 131326117 in words is "one hundred thirty-one million, three hundred twenty-six thousand, one hundred seventeen".