131131244242001 has 4 divisors (see below), whose sum is σ = 131131316835492. Its totient is φ = 131131171648512.

The previous prime is 131131244241941. The next prime is 131131244242043. The reversal of 131131244242001 is 100242442131131.

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 104196649320976 + 26934594921025 = 10207676^2 + 5189855^2 .

It is a cyclic number.

It is not a de Polignac number, because 131131244242001 - 2²⁶ = 131131177133137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131131244242081) 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, 33516176 + ... + 37223601.

It is an arithmetic number, because the mean of its divisors is an integer number (32782829208873).

Almost surely, 2^{131131244242001} is an apocalyptic number.

It is an amenable number.

131131244242001 is a deficient number, since it is larger than the sum of its proper divisors (72593491).

131131244242001 is an equidigital number, since it uses as much as digits as its factorization.

131131244242001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72593490.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 131131244242001 its reverse (100242442131131), we get a palindrome (231373686373132).

The spelling of 131131244242001 in words is "one hundred thirty-one trillion, one hundred thirty-one billion, two hundred forty-four million, two hundred forty-two thousand, one".