131401 has 4 divisors (see below), whose sum is σ = 132804. Its totient is φ = 130000.

The previous prime is 131381. The next prime is 131413. The reversal of 131401 is 104131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104131 = 101 ⋅1031.

It can be written as a sum of positive squares in 2 ways, for example, as 55225 + 76176 = 235^2 + 276^2 .

It is a cyclic number.

It is not a de Polignac number, because 131401 - 2¹³ = 123209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550 + ... + 751.

It is an arithmetic number, because the mean of its divisors is an integer number (33201).

2¹³¹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

131401 is a deficient number, since it is larger than the sum of its proper divisors (1403).

131401 is a wasteful number, since it uses less digits than its factorization.

131401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 131401 is about 362.4927585484. The cubic root of 131401 is about 50.8392993685.

Adding to 131401 its reverse (104131), we get a palindrome (235532).

The spelling of 131401 in words is "one hundred thirty-one thousand, four hundred one".