131478 has 16 divisors (see below), whose sum is σ = 278640. Its totient is φ = 41216.

The previous prime is 131477. The next prime is 131479. The reversal of 131478 is 874131.

It is an interprime number because it is at equal distance from previous prime (131477) and next prime (131479).

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 131478.

It is not an unprimeable number, because it can be changed into a prime (131477) 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, 543 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (17415).

2¹³¹⁴⁷⁸ is an apocalyptic number.

131478 is an abundant number, since it is smaller than the sum of its proper divisors (147162).

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

131478 is a wasteful number, since it uses less digits than its factorization.

131478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311.

The product of its digits is 672, while the sum is 24.

The square root of 131478 is about 362.5989520117. The cubic root of 131478 is about 50.8492279120.

The spelling of 131478 in words is "one hundred thirty-one thousand, four hundred seventy-eight".