131181868 has 6 divisors (see below), whose sum is σ = 229568276. Its totient is φ = 65590932.

The previous prime is 131181859. The next prime is 131181881. The reversal of 131181868 is 868181131.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16397730 + ... + 16397737.

Almost surely, 2^131181868 is an apocalyptic number.

It is an amenable number.

131181868 is a deficient number, since it is larger than the sum of its proper divisors (98386408).

131181868 is a wasteful number, since it uses less digits than its factorization.

131181868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32795471 (or 32795469 counting only the distinct ones).

The product of its digits is 9216, while the sum is 37.

The square root of 131181868 is about 11453.4653271401. The cubic root of 131181868 is about 508.1102278011.

The spelling of 131181868 in words is "one hundred thirty-one million, one hundred eighty-one thousand, eight hundred sixty-eight".