131242808 has 8 divisors (see below), whose sum is σ = 246080280. Its totient is φ = 65621400.

The previous prime is 131242801. The next prime is 131242819. The reversal of 131242808 is 808242131.

131242808 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131242801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8202668 + ... + 8202683.

It is an arithmetic number, because the mean of its divisors is an integer number (30760035).

Almost surely, 2^131242808 is an apocalyptic number.

It is an amenable number.

131242808 is a deficient number, since it is larger than the sum of its proper divisors (114837472).

131242808 is a wasteful number, since it uses less digits than its factorization.

131242808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16405357 (or 16405353 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 131242808 is about 11456.1253484762. The cubic root of 131242808 is about 508.1888957965.

Adding to 131242808 its reverse (808242131), we get a palindrome (939484939).

The spelling of 131242808 in words is "one hundred thirty-one million, two hundred forty-two thousand, eight hundred eight".