198323423 has 2 divisors, whose sum is σ = 198323424. Its totient is φ = 198323422.

The previous prime is 198323401. The next prime is 198323467. The reversal of 198323423 is 324323891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198323423 - 2¹² = 198319327 is a prime.

It is a super-2 number, since 2×198323423² = 78664360220873858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198323473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99161711 + 99161712.

It is an arithmetic number, because the mean of its divisors is an integer number (99161712).

Almost surely, 2^198323423 is an apocalyptic number.

198323423 is a deficient number, since it is larger than the sum of its proper divisors (1).

198323423 is an equidigital number, since it uses as much as digits as its factorization.

198323423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 198323423 is about 14082.7349261427. The cubic root of 198323423 is about 583.1648464328.

The spelling of 198323423 in words is "one hundred ninety-eight million, three hundred twenty-three thousand, four hundred twenty-three".