131717023 has 2 divisors, whose sum is σ = 131717024. Its totient is φ = 131717022.

The previous prime is 131717011. The next prime is 131717081. The reversal of 131717023 is 320717131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131717023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131717083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65858511 + 65858512.

It is an arithmetic number, because the mean of its divisors is an integer number (65858512).

Almost surely, 2^131717023 is an apocalyptic number.

131717023 is a deficient number, since it is larger than the sum of its proper divisors (1).

131717023 is an equidigital number, since it uses as much as digits as its factorization.

131717023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 131717023 is about 11476.8036926664. The cubic root of 131717023 is about 508.8002337373.

The spelling of 131717023 in words is "one hundred thirty-one million, seven hundred seventeen thousand, twenty-three".