199000931 has 2 divisors, whose sum is σ = 199000932. Its totient is φ = 199000930.

The previous prime is 199000913. The next prime is 199000933. The reversal of 199000931 is 139000991.

Together with previous prime (199000913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199000931 - 2¹⁴ = 198984547 is a prime.

It is a super-2 number, since 2×199000931² = 79202741077733522, which contains 22 as substring.

Together with 199000933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (199000933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99500465 + 99500466.

It is an arithmetic number, because the mean of its divisors is an integer number (99500466).

Almost surely, 2^199000931 is an apocalyptic number.

199000931 is a deficient number, since it is larger than the sum of its proper divisors (1).

199000931 is an equidigital number, since it uses as much as digits as its factorization.

199000931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 199000931 is about 14106.7689780474. The cubic root of 199000931 is about 583.8281565375.

The spelling of 199000931 in words is "one hundred ninety-nine million, nine hundred thirty-one", and thus it is an aban number.