131810842 has 16 divisors (see below), whose sum is σ = 204946560. Its totient is φ = 63537408.

The previous prime is 131810837. The next prime is 131810881. The reversal of 131810842 is 248018131.

It is a self number, because there is not a number n which added to its sum of digits gives 131810842.

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, 4167 + ... + 16762.

It is an arithmetic number, because the mean of its divisors is an integer number (12809160).

Almost surely, 2^131810842 is an apocalyptic number.

131810842 is a deficient number, since it is larger than the sum of its proper divisors (73135718).

131810842 is a wasteful number, since it uses less digits than its factorization.

131810842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21045.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 131810842 is about 11480.8902964883. The cubic root of 131810842 is about 508.9210072940.

Adding to 131810842 its reverse (248018131), we get a palindrome (379828973).

The spelling of 131810842 in words is "one hundred thirty-one million, eight hundred ten thousand, eight hundred forty-two".