131304305 has 32 divisors (see below), whose sum is σ = 178409088. Its totient is φ = 91929600.

The previous prime is 131304293. The next prime is 131304331. The reversal of 131304305 is 503403131.

It is a happy number.

It is not a de Polignac number, because 131304305 - 2⁴ = 131304289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229670 + ... + 230240.

It is an arithmetic number, because the mean of its divisors is an integer number (5575284).

Almost surely, 2^131304305 is an apocalyptic number.

It is an amenable number.

131304305 is a deficient number, since it is larger than the sum of its proper divisors (47104783).

131304305 is a wasteful number, since it uses less digits than its factorization.

131304305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 131304305 is about 11458.8090567912. The cubic root of 131304305 is about 508.2682581452.

Adding to 131304305 its reverse (503403131), we get a palindrome (634707436).

The spelling of 131304305 in words is "one hundred thirty-one million, three hundred four thousand, three hundred five".