131523820542039 has 4 divisors (see below), whose sum is σ = 175365094056056. Its totient is φ = 87682547028024.

The previous prime is 131523820542013. The next prime is 131523820542073. The reversal of 131523820542039 is 930245028325131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131523820542039 - 2²⁰ = 131523819493463 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 (131523820542089) 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, 21920636757004 + ... + 21920636757009.

It is an arithmetic number, because the mean of its divisors is an integer number (43841273514014).

Almost surely, 2^{131523820542039} is an apocalyptic number.

131523820542039 is a deficient number, since it is larger than the sum of its proper divisors (43841273514017).

131523820542039 is an equidigital number, since it uses as much as digits as its factorization.

131523820542039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43841273514016.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 131523820542039 in words is "one hundred thirty-one trillion, five hundred twenty-three billion, eight hundred twenty million, five hundred forty-two thousand, thirty-nine".