131646373 has 2 divisors, whose sum is σ = 131646374. Its totient is φ = 131646372.

The previous prime is 131646343. The next prime is 131646401. The reversal of 131646373 is 373646131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107371044 + 24275329 = 10362^2 + 4927^2 .

It is a cyclic number.

It is not a de Polignac number, because 131646373 - 2²¹ = 129549221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131646323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65823186 + 65823187.

It is an arithmetic number, because the mean of its divisors is an integer number (65823187).

Almost surely, 2^131646373 is an apocalyptic number.

It is an amenable number.

131646373 is a deficient number, since it is larger than the sum of its proper divisors (1).

131646373 is an equidigital number, since it uses as much as digits as its factorization.

131646373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 34.

The square root of 131646373 is about 11473.7253322537. The cubic root of 131646373 is about 508.7092478631.

The spelling of 131646373 in words is "one hundred thirty-one million, six hundred forty-six thousand, three hundred seventy-three".