131255211245551 has 2 divisors, whose sum is σ = 131255211245552. Its totient is φ = 131255211245550.

The previous prime is 131255211245503. The next prime is 131255211245573. The reversal of 131255211245551 is 155542112552131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131255211245551 - 2³¹ = 131253063761903 is a prime.

It is a super-2 number, since 2×131255211245551² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131255211245498 and 131255211245507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131255211045551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65627605622775 + 65627605622776.

It is an arithmetic number, because the mean of its divisors is an integer number (65627605622776).

Almost surely, 2^{131255211245551} is an apocalyptic number.

131255211245551 is a deficient number, since it is larger than the sum of its proper divisors (1).

131255211245551 is an equidigital number, since it uses as much as digits as its factorization.

131255211245551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300000, while the sum is 43.

Adding to 131255211245551 its reverse (155542112552131), we get a palindrome (286797323797682).

The spelling of 131255211245551 in words is "one hundred thirty-one trillion, two hundred fifty-five billion, two hundred eleven million, two hundred forty-five thousand, five hundred fifty-one".