131262378 has 32 divisors (see below), whose sum is σ = 285331200. Its totient is φ = 40015296.

The previous prime is 131262367. The next prime is 131262379. The reversal of 131262378 is 873262131.

It is not an unprimeable number, because it can be changed into a prime (131262379) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 783 + ... + 16221.

It is an arithmetic number, because the mean of its divisors is an integer number (8916600).

Almost surely, 2^131262378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131262378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142665600).

131262378 is an abundant number, since it is smaller than the sum of its proper divisors (154068822).

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

131262378 is a wasteful number, since it uses less digits than its factorization.

131262378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15566.

The product of its digits is 12096, while the sum is 33.

The square root of 131262378 is about 11456.9794448624. The cubic root of 131262378 is about 508.2141537200.

The spelling of 131262378 in words is "one hundred thirty-one million, two hundred sixty-two thousand, three hundred seventy-eight".