131649671 has 2 divisors, whose sum is σ = 131649672. Its totient is φ = 131649670.

The previous prime is 131649593. The next prime is 131649701. The reversal of 131649671 is 176946131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131649671 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131649571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65824835 + 65824836.

It is an arithmetic number, because the mean of its divisors is an integer number (65824836).

Almost surely, 2^131649671 is an apocalyptic number.

131649671 is a deficient number, since it is larger than the sum of its proper divisors (1).

131649671 is an equidigital number, since it uses as much as digits as its factorization.

131649671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 131649671 is about 11473.8690510220. The cubic root of 131649671 is about 508.7134958827.

The spelling of 131649671 in words is "one hundred thirty-one million, six hundred forty-nine thousand, six hundred seventy-one".