131178240 has 216 divisors, whose sum is σ = 463947120. Its totient is φ = 34209792.

The previous prime is 131178221. The next prime is 131178277. The reversal of 131178240 is 42871131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 679584 + ... + 679776.

Almost surely, 2^131178240 is an apocalyptic number.

131178240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131178240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231973560).

131178240 is an abundant number, since it is smaller than the sum of its proper divisors (332768880).

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

131178240 is a wasteful number, since it uses less digits than its factorization.

131178240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 131178240 is about 11453.3069460309. The cubic root of 131178240 is about 508.1055436149.

The spelling of 131178240 in words is "one hundred thirty-one million, one hundred seventy-eight thousand, two hundred forty".