131863486 has 8 divisors (see below), whose sum is σ = 203141160. Its totient is φ = 64149768.

The previous prime is 131863471. The next prime is 131863507. The reversal of 131863486 is 684368131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890896 + ... + 891043.

It is an arithmetic number, because the mean of its divisors is an integer number (25392645).

Almost surely, 2^131863486 is an apocalyptic number.

131863486 is a deficient number, since it is larger than the sum of its proper divisors (71277674).

131863486 is a wasteful number, since it uses less digits than its factorization.

131863486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781978.

The product of its digits is 82944, while the sum is 40.

The square root of 131863486 is about 11483.1827469565. The cubic root of 131863486 is about 508.9887510171.

The spelling of 131863486 in words is "one hundred thirty-one million, eight hundred sixty-three thousand, four hundred eighty-six".