131312198 has 16 divisors (see below), whose sum is σ = 207658080. Its totient is φ = 62151936.

The previous prime is 131312177. The next prime is 131312201. The reversal of 131312198 is 891213131.

It is a self number, because there is not a number n which added to its sum of digits gives 131312198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10253 + ... + 19176.

It is an arithmetic number, because the mean of its divisors is an integer number (12978630).

Almost surely, 2^131312198 is an apocalyptic number.

131312198 is a deficient number, since it is larger than the sum of its proper divisors (76345882).

131312198 is a wasteful number, since it uses less digits than its factorization.

131312198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29551.

The product of its digits is 1296, while the sum is 29.

The square root of 131312198 is about 11459.1534591348. The cubic root of 131312198 is about 508.2784423276.

The spelling of 131312198 in words is "one hundred thirty-one million, three hundred twelve thousand, one hundred ninety-eight".