208196971 has 2 divisors, whose sum is σ = 208196972. Its totient is φ = 208196970.

The previous prime is 208196969. The next prime is 208196983. The reversal of 208196971 is 179691802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 208196971 - 2¹ = 208196969 is a prime.

Together with 208196969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (208196941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104098485 + 104098486.

It is an arithmetic number, because the mean of its divisors is an integer number (104098486).

Almost surely, 2^208196971 is an apocalyptic number.

208196971 is a deficient number, since it is larger than the sum of its proper divisors (1).

208196971 is an equidigital number, since it uses as much as digits as its factorization.

208196971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 208196971 is about 14429.0322267296. The cubic root of 208196971 is about 592.6861821799.

The spelling of 208196971 in words is "two hundred eight million, one hundred ninety-six thousand, nine hundred seventy-one".