197631199 has 2 divisors, whose sum is σ = 197631200. Its totient is φ = 197631198.

The previous prime is 197631151. The next prime is 197631209. The reversal of 197631199 is 991136791.

It is a strong prime.

It is an emirp because it is prime and its reverse (991136791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197631199 - 2¹³ = 197623007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197631799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98815599 + 98815600.

It is an arithmetic number, because the mean of its divisors is an integer number (98815600).

Almost surely, 2^197631199 is an apocalyptic number.

197631199 is a deficient number, since it is larger than the sum of its proper divisors (1).

197631199 is an equidigital number, since it uses as much as digits as its factorization.

197631199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 46.

The square root of 197631199 is about 14058.1363985416. The cubic root of 197631199 is about 582.4855666388.

The spelling of 197631199 in words is "one hundred ninety-seven million, six hundred thirty-one thousand, one hundred ninety-nine".