101328181 has 4 divisors (see below), whose sum is σ = 104596864. Its totient is φ = 98059500.

The previous prime is 101328173. The next prime is 101328203. The reversal of 101328181 is 181823101.

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 not a de Polignac number, because 101328181 - 2³ = 101328173 is a prime.

It is a super-2 number, since 2×101328181² = 20534800529537522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101328131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1634295 + ... + 1634356.

It is an arithmetic number, because the mean of its divisors is an integer number (26149216).

Almost surely, 2^101328181 is an apocalyptic number.

It is an amenable number.

101328181 is a deficient number, since it is larger than the sum of its proper divisors (3268683).

101328181 is an equidigital number, since it uses as much as digits as its factorization.

101328181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268682.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 101328181 is about 10066.1899942332. The cubic root of 101328181 is about 466.2048087550.

The spelling of 101328181 in words is "one hundred one million, three hundred twenty-eight thousand, one hundred eighty-one".