131134105808 has 20 divisors (see below), whose sum is σ = 254086462500. Its totient is φ = 65563405824.

The previous prime is 131134105799. The next prime is 131134105841. The reversal of 131134105808 is 808501431131.

It can be written as a sum of positive squares in 2 ways, for example, as 27261972544 + 103872133264 = 165112^2 + 322292^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81416 + ... + 518552.

It is an arithmetic number, because the mean of its divisors is an integer number (12704323125).

Almost surely, 2^131134105808 is an apocalyptic number.

It is an amenable number.

131134105808 is a deficient number, since it is larger than the sum of its proper divisors (122952356692).

131134105808 is a wasteful number, since it uses less digits than its factorization.

131134105808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455894 (or 455888 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

Adding to 131134105808 its reverse (808501431131), we get a palindrome (939635536939).

The spelling of 131134105808 in words is "one hundred thirty-one billion, one hundred thirty-four million, one hundred five thousand, eight hundred eight".