100881881 has 4 divisors (see below), whose sum is σ = 103028352. Its totient is φ = 98735412.

The previous prime is 100881871. The next prime is 100881883. The reversal of 100881881 is 188188001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100881881 is a prime.

It is a super-2 number, since 2×100881881² = 20354307828196322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100881883) 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 3 ways as a sum of consecutive naturals, for example, 1073165 + ... + 1073258.

It is an arithmetic number, because the mean of its divisors is an integer number (25757088).

Almost surely, 2^100881881 is an apocalyptic number.

It is an amenable number.

100881881 is a deficient number, since it is larger than the sum of its proper divisors (2146471).

100881881 is an equidigital number, since it uses as much as digits as its factorization.

100881881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146470.

The product of its (nonzero) digits is 4096, while the sum is 35.

The square root of 100881881 is about 10043.9972620466. The cubic root of 100881881 is about 465.5193349769.

The spelling of 100881881 in words is "one hundred million, eight hundred eighty-one thousand, eight hundred eighty-one".