131278 has 8 divisors (see below), whose sum is σ = 225072. Its totient is φ = 56256.

The previous prime is 131267. The next prime is 131293. The reversal of 131278 is 872131.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4675 + ... + 4702.

It is an arithmetic number, because the mean of its divisors is an integer number (28134).

2¹³¹²⁷⁸ is an apocalyptic number.

131278 is a deficient number, since it is larger than the sum of its proper divisors (93794).

131278 is an equidigital number, since it uses as much as digits as its factorization.

131278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9386.

The product of its digits is 336, while the sum is 22.

The square root of 131278 is about 362.3230602653. The cubic root of 131278 is about 50.8234314375.

The spelling of 131278 in words is "one hundred thirty-one thousand, two hundred seventy-eight".