131207 has 4 divisors (see below), whose sum is σ = 132120. Its totient is φ = 130296.

The previous prime is 131203. The next prime is 131213. The reversal of 131207 is 702131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 131207 - 2² = 131203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131191 and 131200.

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 131207.

It is not an unprimeable number, because it can be changed into a prime (131203) 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, 188 + ... + 545.

It is an arithmetic number, because the mean of its divisors is an integer number (33030).

2¹³¹²⁰⁷ is an apocalyptic number.

131207 is a deficient number, since it is larger than the sum of its proper divisors (913).

131207 is an equidigital number, since it uses as much as digits as its factorization.

131207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 131207 is about 362.2250681551. The cubic root of 131207 is about 50.8142673878.

Adding to 131207 its reverse (702131), we get a palindrome (833338).

The spelling of 131207 in words is "one hundred thirty-one thousand, two hundred seven".