131317223 has 2 divisors, whose sum is σ = 131317224. Its totient is φ = 131317222.

The previous prime is 131317217. The next prime is 131317243. The reversal of 131317223 is 322713131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131317223 - 2⁶ = 131317159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131317243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65658611 + 65658612.

It is an arithmetic number, because the mean of its divisors is an integer number (65658612).

Almost surely, 2^131317223 is an apocalyptic number.

131317223 is a deficient number, since it is larger than the sum of its proper divisors (1).

131317223 is an equidigital number, since it uses as much as digits as its factorization.

131317223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 23.

The square root of 131317223 is about 11459.3727140712. The cubic root of 131317223 is about 508.2849257735.

The spelling of 131317223 in words is "one hundred thirty-one million, three hundred seventeen thousand, two hundred twenty-three".