131481198 has 16 divisors (see below), whose sum is σ = 292180560. Its totient is φ = 43827048.

The previous prime is 131481173. The next prime is 131481209. The reversal of 131481198 is 891184131.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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, 1217365 + ... + 1217472.

It is an arithmetic number, because the mean of its divisors is an integer number (18261285).

Almost surely, 2^131481198 is an apocalyptic number.

131481198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

131481198 is an abundant number, since it is smaller than the sum of its proper divisors (160699362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131481198 is a wasteful number, since it uses less digits than its factorization.

131481198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434848 (or 2434842 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 131481198 is about 11466.5251057153. The cubic root of 131481198 is about 508.4964018506.

The spelling of 131481198 in words is "one hundred thirty-one million, four hundred eighty-one thousand, one hundred ninety-eight".