131204304 has 120 divisors (see below), whose sum is σ = 457833792. Its totient is φ = 34076160.

The previous prime is 131204303. The next prime is 131204357. The reversal of 131204304 is 403402131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131204303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5172 + ... + 17004.

Almost surely, 2^131204304 is an apocalyptic number.

131204304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131204304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228916896).

131204304 is an abundant number, since it is smaller than the sum of its proper divisors (326629488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131204304 is a wasteful number, since it uses less digits than its factorization.

131204304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11865 (or 11856 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 131204304 is about 11454.4447268298. Note that the first 3 decimals coincide. The cubic root of 131204304 is about 508.1391934689.

Adding to 131204304 its reverse (403402131), we get a palindrome (534606435).

It can be divided in two parts, 13120 and 4304, that added together give a square (17424 = 132²).

The spelling of 131204304 in words is "one hundred thirty-one million, two hundred four thousand, three hundred four".