131325247217 has 4 divisors (see below), whose sum is σ = 131327749620. Its totient is φ = 131322744816.

The previous prime is 131325247201. The next prime is 131325247237. The reversal of 131325247217 is 712742523131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712742523131 = 71761 ⋅9932171.

It can be written as a sum of positive squares in 2 ways, for example, as 55990917376 + 75334329841 = 236624^2 + 274471^2 .

It is a cyclic number.

It is not a de Polignac number, because 131325247217 - 2⁴ = 131325247201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131325247237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170758 + ... + 1278015.

It is an arithmetic number, because the mean of its divisors is an integer number (32831937405).

Almost surely, 2^131325247217 is an apocalyptic number.

It is an amenable number.

131325247217 is a deficient number, since it is larger than the sum of its proper divisors (2502403).

131325247217 is an equidigital number, since it uses as much as digits as its factorization.

131325247217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502402.

The product of its digits is 70560, while the sum is 38.

The spelling of 131325247217 in words is "one hundred thirty-one billion, three hundred twenty-five million, two hundred forty-seven thousand, two hundred seventeen".