131340404 has 48 divisors (see below), whose sum is σ = 255615360. Its totient is φ = 58665600.

The previous prime is 131340403. The next prime is 131340409. The reversal of 131340404 is 404043131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131340401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337442 + ... + 337830.

It is an arithmetic number, because the mean of its divisors is an integer number (5325320).

Almost surely, 2^131340404 is an apocalyptic number.

It is an amenable number.

131340404 is a deficient number, since it is larger than the sum of its proper divisors (124274956).

131340404 is a wasteful number, since it uses less digits than its factorization.

131340404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 598 counting only the distinct ones).

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

The square root of 131340404 is about 11460.3841122364. The cubic root of 131340404 is about 508.3148326391.

Adding to 131340404 its reverse (404043131), we get a palindrome (535383535).

The spelling of 131340404 in words is "one hundred thirty-one million, three hundred forty thousand, four hundred four".