131318 has 16 divisors (see below), whose sum is σ = 221184. Its totient is φ = 57960.

The previous prime is 131317. The next prime is 131321. The reversal of 131318 is 813131.

131318 is nontrivially palindromic in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 131296 and 131305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971 + ... + 1097.

It is an arithmetic number, because the mean of its divisors is an integer number (13824).

2¹³¹³¹⁸ is an apocalyptic number.

131318 is a deficient number, since it is larger than the sum of its proper divisors (89866).

131318 is a wasteful number, since it uses less digits than its factorization.

131318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187.

The product of its digits is 72, while the sum is 17.

The square root of 131318 is about 362.3782554183. The cubic root of 131318 is about 50.8285928274.

Adding to 131318 its reverse (813131), we get a palindrome (944449).

It can be divided in two parts, 1313 and 18, that added together give a palindrome (1331).

The spelling of 131318 in words is "one hundred thirty-one thousand, three hundred eighteen".