131207117 has 2 divisors, whose sum is σ = 131207118. Its totient is φ = 131207116.

The previous prime is 131207101. The next prime is 131207123. The reversal of 131207117 is 711702131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128006596 + 3200521 = 11314^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 131207117 - 2⁴ = 131207101 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131207092 and 131207101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131207137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65603558 + 65603559.

It is an arithmetic number, because the mean of its divisors is an integer number (65603559).

Almost surely, 2^131207117 is an apocalyptic number.

It is an amenable number.

131207117 is a deficient number, since it is larger than the sum of its proper divisors (1).

131207117 is an equidigital number, since it uses as much as digits as its factorization.

131207117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294, while the sum is 23.

The square root of 131207117 is about 11454.5675169340. The cubic root of 131207117 is about 508.1428249182.

Adding to 131207117 its reverse (711702131), we get a palindrome (842909248).

The spelling of 131207117 in words is "one hundred thirty-one million, two hundred seven thousand, one hundred seventeen".