100328881 has 2 divisors, whose sum is σ = 100328882. Its totient is φ = 100328880.

The previous prime is 100328869. The next prime is 100328887. The reversal of 100328881 is 188823001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94965025 + 5363856 = 9745^2 + 2316^2 .

It is a cyclic number.

It is not a de Polignac number, because 100328881 - 2¹⁵ = 100296113 is a prime.

It is a super-2 number, since 2×100328881² = 20131768725424322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100328887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50164440 + 50164441.

It is an arithmetic number, because the mean of its divisors is an integer number (50164441).

Almost surely, 2^100328881 is an apocalyptic number.

It is an amenable number.

100328881 is a deficient number, since it is larger than the sum of its proper divisors (1).

100328881 is an equidigital number, since it uses as much as digits as its factorization.

100328881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 100328881 is about 10016.4305518483. The cubic root of 100328881 is about 464.6671700075.

The spelling of 100328881 in words is "one hundred million, three hundred twenty-eight thousand, eight hundred eighty-one".