131800120 has 32 divisors (see below), whose sum is σ = 309445920. Its totient is φ = 50427520.

The previous prime is 131800103. The next prime is 131800121. The reversal of 131800120 is 21008131.

It is a junction number, because it is equal to n+sod(n) for n = 131800094 and 131800103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131800121) 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, 70711 + ... + 72550.

It is an arithmetic number, because the mean of its divisors is an integer number (9670185).

Almost surely, 2^131800120 is an apocalyptic number.

131800120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131800120 is an abundant number, since it is smaller than the sum of its proper divisors (177645800).

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

131800120 is a wasteful number, since it uses less digits than its factorization.

131800120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143295 (or 143291 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 131800120 is about 11480.4233371422. The cubic root of 131800120 is about 508.9072077236.

Adding to 131800120 its reverse (21008131), we get a palindrome (152808251).

The spelling of 131800120 in words is "one hundred thirty-one million, eight hundred thousand, one hundred twenty".