197263823 has 2 divisors, whose sum is σ = 197263824. Its totient is φ = 197263822.

The previous prime is 197263811. The next prime is 197263877. The reversal of 197263823 is 328362791.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197263823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197263883) 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, 98631911 + 98631912.

It is an arithmetic number, because the mean of its divisors is an integer number (98631912).

Almost surely, 2^197263823 is an apocalyptic number.

197263823 is a deficient number, since it is larger than the sum of its proper divisors (1).

197263823 is an equidigital number, since it uses as much as digits as its factorization.

197263823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 197263823 is about 14045.0640083981. The cubic root of 197263823 is about 582.1244159170.

The spelling of 197263823 in words is "one hundred ninety-seven million, two hundred sixty-three thousand, eight hundred twenty-three".