131204320501 has 8 divisors (see below), whose sum is σ = 133698259800. Its totient is φ = 128711062272.

The previous prime is 131204320447. The next prime is 131204320523. The reversal of 131204320501 is 105023402131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 918696100 + 130285624401 = 30310^2 + 360951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131204320501 - 2²⁷ = 131070102773 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 (131204320591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227425 + ... + 560473.

It is an arithmetic number, because the mean of its divisors is an integer number (16712282475).

Almost surely, 2^131204320501 is an apocalyptic number.

It is an amenable number.

131204320501 is a deficient number, since it is larger than the sum of its proper divisors (2493939299).

131204320501 is an equidigital number, since it uses as much as digits as its factorization.

131204320501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340535.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 131204320501 its reverse (105023402131), we get a palindrome (236227722632).

The spelling of 131204320501 in words is "one hundred thirty-one billion, two hundred four million, three hundred twenty thousand, five hundred one".