131555552971 has 2 divisors, whose sum is σ = 131555552972. Its totient is φ = 131555552970.

The previous prime is 131555552969. The next prime is 131555552981. The reversal of 131555552971 is 179255555131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131555552971 - 2¹ = 131555552969 is a prime.

Together with 131555552969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131555552951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65777776485 + 65777776486.

It is an arithmetic number, because the mean of its divisors is an integer number (65777776486).

Almost surely, 2^131555552971 is an apocalyptic number.

131555552971 is a deficient number, since it is larger than the sum of its proper divisors (1).

131555552971 is an equidigital number, since it uses as much as digits as its factorization.

131555552971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1181250, while the sum is 49.

The spelling of 131555552971 in words is "one hundred thirty-one billion, five hundred fifty-five million, five hundred fifty-two thousand, nine hundred seventy-one".