131906198 has 8 divisors (see below), whose sum is σ = 202460808. Its totient is φ = 64419264.

The previous prime is 131906191. The next prime is 131906231. The reversal of 131906198 is 891609131.

131906198 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131906191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766811 + ... + 766982.

It is an arithmetic number, because the mean of its divisors is an integer number (25307601).

Almost surely, 2^131906198 is an apocalyptic number.

131906198 is a deficient number, since it is larger than the sum of its proper divisors (70554610).

131906198 is a wasteful number, since it uses less digits than its factorization.

131906198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533838.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 131906198 is about 11485.0423595214. The cubic root of 131906198 is about 509.0437007264.

The spelling of 131906198 in words is "one hundred thirty-one million, nine hundred six thousand, one hundred ninety-eight".