131311100200121 has 8 divisors (see below), whose sum is σ = 139266622480104. Its totient is φ = 123381282355200.

The previous prime is 131311100200117. The next prime is 131311100200123. The reversal of 131311100200121 is 121002001113131.

It can be written as a sum of positive squares in 4 ways, for example, as 20202867457600 + 111108232742521 = 4494760^2 + 10540789^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 131311100200121 - 2² = 131311100200117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131311100200121.

It is not an unprimeable number, because it can be changed into a prime (131311100200123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6426098240 + ... + 6426118673.

It is an arithmetic number, because the mean of its divisors is an integer number (17408327810013).

Almost surely, 2^{131311100200121} is an apocalyptic number.

It is an amenable number.

131311100200121 is a deficient number, since it is larger than the sum of its proper divisors (7955522279983).

131311100200121 is a wasteful number, since it uses less digits than its factorization.

131311100200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12852217531.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 131311100200121 its reverse (121002001113131), we get a palindrome (252313101313252).

The spelling of 131311100200121 in words is "one hundred thirty-one trillion, three hundred eleven billion, one hundred million, two hundred thousand, one hundred twenty-one".