100447321 has 8 divisors (see below), whose sum is σ = 109698624. Its totient is φ = 91413840.

The previous prime is 100447313. The next prime is 100447331. The reversal of 100447321 is 123744001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100447321 - 2³ = 100447313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100447292 and 100447301.

It is not an unprimeable number, because it can be changed into a prime (100447301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53491 + ... + 55336.

It is an arithmetic number, because the mean of its divisors is an integer number (13712328).

Almost surely, 2^100447321 is an apocalyptic number.

It is an amenable number.

100447321 is a deficient number, since it is larger than the sum of its proper divisors (9251303).

100447321 is a wasteful number, since it uses less digits than its factorization.

100447321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108911.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 100447321 is about 10022.3410937764. The cubic root of 100447321 is about 464.8499473447.

The spelling of 100447321 in words is "one hundred million, four hundred forty-seven thousand, three hundred twenty-one".