198831023999 has 2 divisors, whose sum is σ = 198831024000. Its totient is φ = 198831023998.

The previous prime is 198831023977. The next prime is 198831024037. The reversal of 198831023999 is 999320138891.

It is a weak prime.

It is an emirp because it is prime and its reverse (999320138891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198831023999 - 2¹² = 198831019903 is a prime.

It is a super-2 number, since 2×198831023999² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198831023959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99415511999 + 99415512000.

It is an arithmetic number, because the mean of its divisors is an integer number (99415512000).

Almost surely, 2^198831023999 is an apocalyptic number.

198831023999 is a deficient number, since it is larger than the sum of its proper divisors (1).

198831023999 is an equidigital number, since it uses as much as digits as its factorization.

198831023999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7558272, while the sum is 62.

The spelling of 198831023999 in words is "one hundred ninety-eight billion, eight hundred thirty-one million, twenty-three thousand, nine hundred ninety-nine".