131011344240021 has 24 divisors (see below), whose sum is σ = 216660976631424. Its totient is φ = 74729220187680.

The previous prime is 131011344240019. The next prime is 131011344240031. The reversal of 131011344240021 is 120042443110131.

It is a happy number.

131011344240021 is a `hidden beast` number, since 1 + 3 + 101 + 134 + 4 + 2 + 400 + 21 = 666.

It is not a de Polignac number, because 131011344240021 - 2¹ = 131011344240019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131011344240031) 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, 1866702025 + ... + 1866772206.

It is an arithmetic number, because the mean of its divisors is an integer number (9027540692976).

Almost surely, 2^{131011344240021} is an apocalyptic number.

It is an amenable number.

131011344240021 is a deficient number, since it is larger than the sum of its proper divisors (85649632391403).

131011344240021 is a wasteful number, since it uses less digits than its factorization.

131011344240021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733474801 (or 3733474798 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 131011344240021 its reverse (120042443110131), we get a palindrome (251053787350152).

The spelling of 131011344240021 in words is "one hundred thirty-one trillion, eleven billion, three hundred forty-four million, two hundred forty thousand, twenty-one".