131008117 has 2 divisors, whose sum is σ = 131008118. Its totient is φ = 131008116.

The previous prime is 131008099. The next prime is 131008121. The reversal of 131008117 is 711800131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122014116 + 8994001 = 11046^2 + 2999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131008117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131008127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65504058 + 65504059.

It is an arithmetic number, because the mean of its divisors is an integer number (65504059).

Almost surely, 2^131008117 is an apocalyptic number.

It is an amenable number.

131008117 is a deficient number, since it is larger than the sum of its proper divisors (1).

131008117 is an equidigital number, since it uses as much as digits as its factorization.

131008117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

The square root of 131008117 is about 11445.8777295584. The cubic root of 131008117 is about 507.8857972248.

Adding to 131008117 its reverse (711800131), we get a palindrome (842808248).

The spelling of 131008117 in words is "one hundred thirty-one million, eight thousand, one hundred seventeen".