131204 has 6 divisors (see below), whose sum is σ = 229614. Its totient is φ = 65600.

The previous prime is 131203. The next prime is 131213. The reversal of 131204 is 402131.

It is a happy number.

131204 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 91204 + 40000 = 302^2 + 200^2 .

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 (3) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16397 + ... + 16404.

It is an arithmetic number, because the mean of its divisors is an integer number (38269).

2¹³¹²⁰⁴ is an apocalyptic number.

It is an amenable number.

131204 is a deficient number, since it is larger than the sum of its proper divisors (98410).

131204 is a wasteful number, since it uses less digits than its factorization.

131204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32805 (or 32803 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 131204 is about 362.2209270597. The cubic root of 131204 is about 50.8138801016.

Adding to 131204 its reverse (402131), we get a palindrome (533335).

The spelling of 131204 in words is "one hundred thirty-one thousand, two hundred four".