131256678 has 16 divisors (see below), whose sum is σ = 300015360. Its totient is φ = 37501896.

The previous prime is 131256661. The next prime is 131256679. The reversal of 131256678 is 876652131.

131256678 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131256679) 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, 1562538 + ... + 1562621.

It is an arithmetic number, because the mean of its divisors is an integer number (18750960).

Almost surely, 2^131256678 is an apocalyptic number.

131256678 is an abundant number, since it is smaller than the sum of its proper divisors (168758682).

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

131256678 is a wasteful number, since it uses less digits than its factorization.

131256678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125171.

The product of its digits is 60480, while the sum is 39.

The square root of 131256678 is about 11456.7306854966. The cubic root of 131256678 is about 508.2067973024.

The spelling of 131256678 in words is "one hundred thirty-one million, two hundred fifty-six thousand, six hundred seventy-eight".