131376720187 has 2 divisors, whose sum is σ = 131376720188. Its totient is φ = 131376720186.

The previous prime is 131376720113. The next prime is 131376720191. The reversal of 131376720187 is 781027673131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131376720187 is a prime.

It is not a weakly prime, because it can be changed into another prime (131376720197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65688360093 + 65688360094.

It is an arithmetic number, because the mean of its divisors is an integer number (65688360094).

Almost surely, 2^131376720187 is an apocalyptic number.

131376720187 is a deficient number, since it is larger than the sum of its proper divisors (1).

131376720187 is an equidigital number, since it uses as much as digits as its factorization.

131376720187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 131376720187 in words is "one hundred thirty-one billion, three hundred seventy-six million, seven hundred twenty thousand, one hundred eighty-seven".