131008408 has 16 divisors (see below), whose sum is σ = 247896000. Its totient is φ = 64902816.

The previous prime is 131008403. The next prime is 131008429. The reversal of 131008408 is 804800131.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131008403) 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, 74248 + ... + 75991.

It is an arithmetic number, because the mean of its divisors is an integer number (15493500).

Almost surely, 2^131008408 is an apocalyptic number.

It is an amenable number.

131008408 is a deficient number, since it is larger than the sum of its proper divisors (116887592).

131008408 is a wasteful number, since it uses less digits than its factorization.

131008408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150354 (or 150350 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 131008408 is about 11445.8904415515. The cubic root of 131008408 is about 507.8861732693.

Adding to 131008408 its reverse (804800131), we get a palindrome (935808539).

The spelling of 131008408 in words is "one hundred thirty-one million, eight thousand, four hundred eight".