131413342020021 has 24 divisors (see below), whose sum is σ = 200988423828504. Its totient is φ = 82454071311360.

The previous prime is 131413342020007. The next prime is 131413342020029. The reversal of 131413342020021 is 120020243314131.

131413342020021 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 1 + 33 + 420 + 200 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 24812652312900 + 106600689707121 = 4981230^2 + 10324761^2 .

It is not a de Polignac number, because 131413342020021 - 2¹⁴ = 131413342003637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131413342020029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2275831 + ... + 16370891.

It is an arithmetic number, because the mean of its divisors is an integer number (8374517659521).

Almost surely, 2^{131413342020021} is an apocalyptic number.

It is an amenable number.

131413342020021 is a deficient number, since it is larger than the sum of its proper divisors (69575081808483).

131413342020021 is a wasteful number, since it uses less digits than its factorization.

131413342020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14156021 (or 14156018 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 131413342020021 its reverse (120020243314131), we get a palindrome (251433585334152).

The spelling of 131413342020021 in words is "one hundred thirty-one trillion, four hundred thirteen billion, three hundred forty-two million, twenty thousand, twenty-one".