131020420214401 has 4 divisors (see below), whose sum is σ = 131137716921172. Its totient is φ = 130903123507632.

The previous prime is 131020420214381. The next prime is 131020420214407. The reversal of 131020420214401 is 104412024020131.

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 59093059214401 + 71927361000000 = 7687201^2 + 8481000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131020420214401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131020420214407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58648351710 + ... + 58648353943.

It is an arithmetic number, because the mean of its divisors is an integer number (32784429230293).

Almost surely, 2^{131020420214401} is an apocalyptic number.

It is an amenable number.

131020420214401 is a deficient number, since it is larger than the sum of its proper divisors (117296706771).

131020420214401 is a wasteful number, since it uses less digits than its factorization.

131020420214401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117296706770.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 131020420214401 its reverse (104412024020131), we get a palindrome (235432444234532).

The spelling of 131020420214401 in words is "one hundred thirty-one trillion, twenty billion, four hundred twenty million, two hundred fourteen thousand, four hundred one".