131304236 has 12 divisors (see below), whose sum is σ = 262608528. Its totient is φ = 56273232.

The previous prime is 131304233. The next prime is 131304247. The reversal of 131304236 is 632403131.

131304236 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (131304233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2344691 + ... + 2344746.

It is an arithmetic number, because the mean of its divisors is an integer number (21884044).

Almost surely, 2^131304236 is an apocalyptic number.

It is an amenable number.

131304236 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131304236 is a wasteful number, since it uses less digits than its factorization.

131304236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689448 (or 4689446 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 131304236 is about 11458.8060460067. The cubic root of 131304236 is about 508.2681691141.

Adding to 131304236 its reverse (632403131), we get a palindrome (763707367).

The spelling of 131304236 in words is "one hundred thirty-one million, three hundred four thousand, two hundred thirty-six".