199056031 has 2 divisors, whose sum is σ = 199056032. Its totient is φ = 199056030.

The previous prime is 199056019. The next prime is 199056047. The reversal of 199056031 is 130650991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199056031 - 2²⁵ = 165501599 is a prime.

It is a super-3 number, since 3×199056031³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199056631) 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, 99528015 + 99528016.

It is an arithmetic number, because the mean of its divisors is an integer number (99528016).

Almost surely, 2^199056031 is an apocalyptic number.

199056031 is a deficient number, since it is larger than the sum of its proper divisors (1).

199056031 is an equidigital number, since it uses as much as digits as its factorization.

199056031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 199056031 is about 14108.7218060319. The cubic root of 199056031 is about 583.8820356203.

The spelling of 199056031 in words is "one hundred ninety-nine million, fifty-six thousand, thirty-one".