131300140021 has 4 divisors (see below), whose sum is σ = 134848792492. Its totient is φ = 127751487552.

The previous prime is 131300140007. The next prime is 131300140057. The reversal of 131300140021 is 120041003131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 127345491025 + 3954648996 = 356855^2 + 62886^2 .

It is a cyclic number.

It is not a de Polignac number, because 131300140021 - 2⁵ = 131300139989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131300139977 and 131300140004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131300140721) 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 3 ways as a sum of consecutive naturals, for example, 1774326180 + ... + 1774326253.

It is an arithmetic number, because the mean of its divisors is an integer number (33712198123).

Almost surely, 2^131300140021 is an apocalyptic number.

It is an amenable number.

131300140021 is a deficient number, since it is larger than the sum of its proper divisors (3548652471).

131300140021 is an equidigital number, since it uses as much as digits as its factorization.

131300140021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3548652470.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131300140021 its reverse (120041003131), we get a palindrome (251341143152).

The spelling of 131300140021 in words is "one hundred thirty-one billion, three hundred million, one hundred forty thousand, twenty-one".