131523454220023 has 4 divisors (see below), whose sum is σ = 134582139201928. Its totient is φ = 128464769238120.

The previous prime is 131523454219979. The next prime is 131523454220051. The reversal of 131523454220023 is 320022454325131.

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

It is a cyclic number.

It is not a de Polignac number, because 131523454220023 - 2²¹ = 131523452122871 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 (131523454220723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1529342490888 + ... + 1529342490973.

It is an arithmetic number, because the mean of its divisors is an integer number (33645534800482).

Almost surely, 2^{131523454220023} is an apocalyptic number.

131523454220023 is a deficient number, since it is larger than the sum of its proper divisors (3058684981905).

131523454220023 is an equidigital number, since it uses as much as digits as its factorization.

131523454220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058684981904.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 131523454220023 in words is "one hundred thirty-one trillion, five hundred twenty-three billion, four hundred fifty-four million, two hundred twenty thousand, twenty-three".