131181116293 has 2 divisors, whose sum is σ = 131181116294. Its totient is φ = 131181116292.

The previous prime is 131181116221. The next prime is 131181116299. The reversal of 131181116293 is 392611181131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86032515969 + 45148600324 = 293313^2 + 212482^2 .

It is a cyclic number.

It is not a de Polignac number, because 131181116293 - 2⁹ = 131181115781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131181116299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65590558146 + 65590558147.

It is an arithmetic number, because the mean of its divisors is an integer number (65590558147).

Almost surely, 2^131181116293 is an apocalyptic number.

It is an amenable number.

131181116293 is a deficient number, since it is larger than the sum of its proper divisors (1).

131181116293 is an equidigital number, since it uses as much as digits as its factorization.

131181116293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 37.

The spelling of 131181116293 in words is "one hundred thirty-one billion, one hundred eighty-one million, one hundred sixteen thousand, two hundred ninety-three".