131344320021 has 8 divisors (see below), whose sum is σ = 177235709280. Its totient is φ = 86507905392.

The previous prime is 131344320017. The next prime is 131344320083. The reversal of 131344320021 is 120023443131.

It is a happy number.

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

It is not a de Polignac number, because 131344320021 - 2² = 131344320017 is a prime.

It is a super-2 number, since 2×131344320021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131344319973 and 131344320000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131344321021) 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, 263743366 + ... + 263743863.

It is an arithmetic number, because the mean of its divisors is an integer number (22154463660).

Almost surely, 2^131344320021 is an apocalyptic number.

It is an amenable number.

131344320021 is a deficient number, since it is larger than the sum of its proper divisors (45891389259).

131344320021 is an equidigital number, since it uses as much as digits as its factorization.

131344320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527487315.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 131344320021 its reverse (120023443131), we get a palindrome (251367763152).

The spelling of 131344320021 in words is "one hundred thirty-one billion, three hundred forty-four million, three hundred twenty thousand, twenty-one".