131724210485013 has 4 divisors (see below), whose sum is σ = 175632280646688. Its totient is φ = 87816140323340.

The previous prime is 131724210485009. The next prime is 131724210485017. The reversal of 131724210485013 is 310584012427131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (131724210485009) and next prime (131724210485017).

It is a cyclic number.

It is not a de Polignac number, because 131724210485013 - 2² = 131724210485009 is a prime.

It is a super-2 number, since 2×131724210485013² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131724210485017) 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, 21954035080833 + ... + 21954035080838.

It is an arithmetic number, because the mean of its divisors is an integer number (43908070161672).

Almost surely, 2^{131724210485013} is an apocalyptic number.

It is an amenable number.

131724210485013 is a deficient number, since it is larger than the sum of its proper divisors (43908070161675).

131724210485013 is an equidigital number, since it uses as much as digits as its factorization.

131724210485013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43908070161674.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 131724210485013 in words is "one hundred thirty-one trillion, seven hundred twenty-four billion, two hundred ten million, four hundred eighty-five thousand, thirteen".