199112031 has 24 divisors (see below), whose sum is σ = 295975680. Its totient is φ = 128908800.

The previous prime is 199112027. The next prime is 199112033. The reversal of 199112031 is 130211991.

It is not a de Polignac number, because 199112031 - 2² = 199112027 is a prime.

It is a super-2 number, since 2×199112031² = 79291201777889922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199111986 and 199112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199112033) 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 in 23 ways as a sum of consecutive naturals, for example, 87810 + ... + 90048.

It is an arithmetic number, because the mean of its divisors is an integer number (12332320).

Almost surely, 2^199112031 is an apocalyptic number.

199112031 is a deficient number, since it is larger than the sum of its proper divisors (96863649).

199112031 is a wasteful number, since it uses less digits than its factorization.

199112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527 (or 2524 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 199112031 is about 14110.7062544722. The cubic root of 199112031 is about 583.9367845739.

The spelling of 199112031 in words is "one hundred ninety-nine million, one hundred twelve thousand, thirty-one".