131243204 has 12 divisors (see below), whose sum is σ = 231822864. Its totient is φ = 65008104.

The previous prime is 131243191. The next prime is 131243209. The reversal of 131243204 is 402342131.

It is not an unprimeable number, because it can be changed into a prime (131243209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152894 + ... + 153749.

It is an arithmetic number, because the mean of its divisors is an integer number (19318572).

Almost surely, 2^131243204 is an apocalyptic number.

It is an amenable number.

131243204 is a deficient number, since it is larger than the sum of its proper divisors (100579660).

131243204 is a wasteful number, since it uses less digits than its factorization.

131243204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306754 (or 306752 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 131243204 is about 11456.1426317937. The cubic root of 131243204 is about 508.1894069168.

Adding to 131243204 its reverse (402342131), we get a palindrome (533585335).

The spelling of 131243204 in words is "one hundred thirty-one million, two hundred forty-three thousand, two hundred four".