199108131 has 8 divisors (see below), whose sum is σ = 281093904. Its totient is φ = 124930560.

The previous prime is 199108127. The next prime is 199108139. The reversal of 199108131 is 131801991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199108131 - 2² = 199108127 is a prime.

It is a super-2 number, since 2×199108131² = 79288095660626322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199108092 and 199108101.

It is not an unprimeable number, because it can be changed into a prime (199108139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1951990 + ... + 1952091.

It is an arithmetic number, because the mean of its divisors is an integer number (35136738).

Almost surely, 2^199108131 is an apocalyptic number.

199108131 is a deficient number, since it is larger than the sum of its proper divisors (81985773).

199108131 is a wasteful number, since it uses less digits than its factorization.

199108131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904101.

The product of its (nonzero) digits is 1944, while the sum is 33.

The square root of 199108131 is about 14110.5680608542. The cubic root of 199108131 is about 583.9329720329.

The spelling of 199108131 in words is "one hundred ninety-nine million, one hundred eight thousand, one hundred thirty-one".