131681231023 has 4 divisors (see below), whose sum is σ = 131740522408. Its totient is φ = 131621939640.

The previous prime is 131681231009. The next prime is 131681231051. The reversal of 131681231023 is 320132186131.

It is a happy number.

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 131681231023 - 2⁵ = 131681230991 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 (131681234023) 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 3 ways as a sum of consecutive naturals, for example, 29642361 + ... + 29646802.

It is an arithmetic number, because the mean of its divisors is an integer number (32935130602).

Almost surely, 2^131681231023 is an apocalyptic number.

131681231023 is a deficient number, since it is larger than the sum of its proper divisors (59291385).

131681231023 is an equidigital number, since it uses as much as digits as its factorization.

131681231023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59291384.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 131681231023 in words is "one hundred thirty-one billion, six hundred eighty-one million, two hundred thirty-one thousand, twenty-three".