101243321 has 4 divisors (see below), whose sum is σ = 104734500. Its totient is φ = 97752144.

The previous prime is 101243299. The next prime is 101243333. The reversal of 101243321 is 123342101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51681721 + 49561600 = 7189^2 + 7040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101243321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101243321.

It is not an unprimeable number, because it can be changed into a prime (101243521) 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, 1745546 + ... + 1745603.

It is an arithmetic number, because the mean of its divisors is an integer number (26183625).

Almost surely, 2^101243321 is an apocalyptic number.

It is an amenable number.

101243321 is a deficient number, since it is larger than the sum of its proper divisors (3491179).

101243321 is an equidigital number, since it uses as much as digits as its factorization.

101243321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491178.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 101243321 is about 10061.9740110974. The cubic root of 101243321 is about 466.0746271710.

Adding to 101243321 its reverse (123342101), we get a palindrome (224585422).

The spelling of 101243321 in words is "one hundred one million, two hundred forty-three thousand, three hundred twenty-one".