197830723 has 2 divisors, whose sum is σ = 197830724. Its totient is φ = 197830722.

The previous prime is 197830691. The next prime is 197830729. The reversal of 197830723 is 327038791.

It is a strong prime.

It is an emirp because it is prime and its reverse (327038791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197830723 - 2⁵ = 197830691 is a prime.

It is not a weakly prime, because it can be changed into another prime (197830729) 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, 98915361 + 98915362.

It is an arithmetic number, because the mean of its divisors is an integer number (98915362).

Almost surely, 2^197830723 is an apocalyptic number.

197830723 is a deficient number, since it is larger than the sum of its proper divisors (1).

197830723 is an equidigital number, since it uses as much as digits as its factorization.

197830723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 197830723 is about 14065.2309970366. The cubic root of 197830723 is about 582.6815221386.

The spelling of 197830723 in words is "one hundred ninety-seven million, eight hundred thirty thousand, seven hundred twenty-three".