131566847 has 2 divisors, whose sum is σ = 131566848. Its totient is φ = 131566846.

The previous prime is 131566843. The next prime is 131566867. The reversal of 131566847 is 748665131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131566847 - 2² = 131566843 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131566843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65783423 + 65783424.

It is an arithmetic number, because the mean of its divisors is an integer number (65783424).

Almost surely, 2^131566847 is an apocalyptic number.

131566847 is a deficient number, since it is larger than the sum of its proper divisors (1).

131566847 is an equidigital number, since it uses as much as digits as its factorization.

131566847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 131566847 is about 11470.2592385700. The cubic root of 131566847 is about 508.6067921714.

The spelling of 131566847 in words is "one hundred thirty-one million, five hundred sixty-six thousand, eight hundred forty-seven".