68831181 has 32 divisors (see below), whose sum is σ = 111715200. Its totient is φ = 41690880.

The previous prime is 68831179. The next prime is 68831219. The reversal of 68831181 is 18113886.

It is not a de Polignac number, because 68831181 - 2¹ = 68831179 is a prime.

It is a super-2 number, since 2×68831181² = 9475462955709522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68831681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10726 + ... + 15896.

It is an arithmetic number, because the mean of its divisors is an integer number (3491100).

Almost surely, 2^68831181 is an apocalyptic number.

It is an amenable number.

68831181 is a deficient number, since it is larger than the sum of its proper divisors (42884019).

68831181 is a wasteful number, since it uses less digits than its factorization.

68831181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5226 (or 5220 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 68831181 is about 8296.4559300945. The cubic root of 68831181 is about 409.8218162876.

The spelling of 68831181 in words is "sixty-eight million, eight hundred thirty-one thousand, one hundred eighty-one".