131345344021401 has 16 divisors (see below), whose sum is σ = 195458276446720. Its totient is φ = 87170900960880.

The previous prime is 131345344021387. The next prime is 131345344021403. The reversal of 131345344021401 is 104120443543131.

131345344021401 is a `hidden beast` number, since 1 + 31 + 3 + 45 + 3 + 440 + 2 + 140 + 1 = 666.

It is not a de Polignac number, because 131345344021401 - 2⁵ = 131345344021369 is a prime.

It is a super-2 number, since 2×131345344021401² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131345344021403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10907263870 + ... + 10907275911.

It is an arithmetic number, because the mean of its divisors is an integer number (12216142277920).

Almost surely, 2^{131345344021401} is an apocalyptic number.

It is an amenable number.

131345344021401 is a deficient number, since it is larger than the sum of its proper divisors (64112932425319).

131345344021401 is a wasteful number, since it uses less digits than its factorization.

131345344021401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21814540013 (or 21814540007 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 131345344021401 its reverse (104120443543131), we get a palindrome (235465787564532).

The spelling of 131345344021401 in words is "one hundred thirty-one trillion, three hundred forty-five billion, three hundred forty-four million, twenty-one thousand, four hundred one".