131303304 has 96 divisors (see below), whose sum is σ = 390405600. Its totient is φ = 39536640.

The previous prime is 131303273. The next prime is 131303309. The reversal of 131303304 is 403303131.

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 (131303309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152427 + ... + 153285.

It is an arithmetic number, because the mean of its divisors is an integer number (4066725).

Almost surely, 2^131303304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131303304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195202800).

131303304 is an abundant number, since it is smaller than the sum of its proper divisors (259102296).

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

131303304 is a wasteful number, since it uses less digits than its factorization.

131303304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 131303304 is about 11458.7653785214. The cubic root of 131303304 is about 508.2669665455.

Adding to 131303304 its reverse (403303131), we get a palindrome (534606435).

The spelling of 131303304 in words is "one hundred thirty-one million, three hundred three thousand, three hundred four".