131718245 has 8 divisors (see below), whose sum is σ = 161738016. Its totient is φ = 102923856.

The previous prime is 131718233. The next prime is 131718247. The reversal of 131718245 is 542817131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131718245 - 2⁴ = 131718229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131718247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306107 + ... + 306536.

It is an arithmetic number, because the mean of its divisors is an integer number (20217252).

Almost surely, 2^131718245 is an apocalyptic number.

It is an amenable number.

131718245 is a deficient number, since it is larger than the sum of its proper divisors (30019771).

131718245 is an equidigital number, since it uses as much as digits as its factorization.

131718245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612691.

The product of its digits is 6720, while the sum is 32.

The square root of 131718245 is about 11476.8569303621. The cubic root of 131718245 is about 508.8018071911.

The spelling of 131718245 in words is "one hundred thirty-one million, seven hundred eighteen thousand, two hundred forty-five".