131671201 has 2 divisors, whose sum is σ = 131671202. Its totient is φ = 131671200.

The previous prime is 131671193. The next prime is 131671247. The reversal of 131671201 is 102176131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91221601 + 40449600 = 9551^2 + 6360^2 .

It is an emirp because it is prime and its reverse (102176131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131671201 - 2³ = 131671193 is a prime.

It is not a weakly prime, because it can be changed into another prime (131671301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65835600 + 65835601.

It is an arithmetic number, because the mean of its divisors is an integer number (65835601).

Almost surely, 2^131671201 is an apocalyptic number.

It is an amenable number.

131671201 is a deficient number, since it is larger than the sum of its proper divisors (1).

131671201 is an equidigital number, since it uses as much as digits as its factorization.

131671201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 131671201 is about 11474.8072314963. The cubic root of 131671201 is about 508.7412260559.

The spelling of 131671201 in words is "one hundred thirty-one million, six hundred seventy-one thousand, two hundred one".