131861344051 has 2 divisors, whose sum is σ = 131861344052. Its totient is φ = 131861344050.

The previous prime is 131861344049. The next prime is 131861344093. The reversal of 131861344051 is 150443168131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131861344051 - 2¹ = 131861344049 is a prime.

Together with 131861344049, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 131861344051.

It is not a weakly prime, because it can be changed into another prime (131861344001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65930672025 + 65930672026.

It is an arithmetic number, because the mean of its divisors is an integer number (65930672026).

Almost surely, 2^131861344051 is an apocalyptic number.

131861344051 is a deficient number, since it is larger than the sum of its proper divisors (1).

131861344051 is an equidigital number, since it uses as much as digits as its factorization.

131861344051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 131861344051 in words is "one hundred thirty-one billion, eight hundred sixty-one million, three hundred forty-four thousand, fifty-one".