131243304 has 32 divisors (see below), whose sum is σ = 328677120. Its totient is φ = 43671936.

The previous prime is 131243297. The next prime is 131243347. The reversal of 131243304 is 403342131.

131243304 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10377 + ... + 19239.

It is an arithmetic number, because the mean of its divisors is an integer number (10271160).

Almost surely, 2^131243304 is an apocalyptic number.

It is an amenable number.

131243304 is an abundant number, since it is smaller than the sum of its proper divisors (197433816).

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

131243304 is a wasteful number, since it uses less digits than its factorization.

131243304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9489 (or 9485 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 131243304 is about 11456.1469962636. The cubic root of 131243304 is about 508.1895359874.

Adding to 131243304 its reverse (403342131), we get a palindrome (534585435).

The spelling of 131243304 in words is "one hundred thirty-one million, two hundred forty-three thousand, three hundred four".