131431838 has 8 divisors (see below), whose sum is σ = 200867688. Its totient is φ = 64475944.

The previous prime is 131431837. The next prime is 131431841. The reversal of 131431838 is 838134131.

131431838 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 (131431831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619856 + ... + 620067.

It is an arithmetic number, because the mean of its divisors is an integer number (25108461).

Almost surely, 2^131431838 is an apocalyptic number.

131431838 is a deficient number, since it is larger than the sum of its proper divisors (69435850).

131431838 is a wasteful number, since it uses less digits than its factorization.

131431838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239978.

The product of its digits is 6912, while the sum is 32.

The square root of 131431838 is about 11464.3725515180. The cubic root of 131431838 is about 508.4327615118.

Adding to 131431838 its reverse (838134131), we get a palindrome (969565969).

The spelling of 131431838 in words is "one hundred thirty-one million, four hundred thirty-one thousand, eight hundred thirty-eight".