131812272531851 has 2 divisors, whose sum is σ = 131812272531852. Its totient is φ = 131812272531850.

The previous prime is 131812272531847. The next prime is 131812272531871. The reversal of 131812272531851 is 158135272218131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131812272531851 - 2² = 131812272531847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131812272531851.

It is not a weakly prime, because it can be changed into another prime (131812272531871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65906136265925 + 65906136265926.

It is an arithmetic number, because the mean of its divisors is an integer number (65906136265926).

Almost surely, 2^{131812272531851} is an apocalyptic number.

131812272531851 is a deficient number, since it is larger than the sum of its proper divisors (1).

131812272531851 is an equidigital number, since it uses as much as digits as its factorization.

131812272531851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 50.

The spelling of 131812272531851 in words is "one hundred thirty-one trillion, eight hundred twelve billion, two hundred seventy-two million, five hundred thirty-one thousand, eight hundred fifty-one".