101804321 has 2 divisors, whose sum is σ = 101804322. Its totient is φ = 101804320.

The previous prime is 101804309. The next prime is 101804359. The reversal of 101804321 is 123408101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73342096 + 28462225 = 8564^2 + 5335^2 .

It is an emirp because it is prime and its reverse (123408101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101804321 - 2⁶ = 101804257 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 101804293 and 101804302.

It is not a weakly prime, because it can be changed into another prime (101804621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50902160 + 50902161.

It is an arithmetic number, because the mean of its divisors is an integer number (50902161).

Almost surely, 2^101804321 is an apocalyptic number.

It is an amenable number.

101804321 is a deficient number, since it is larger than the sum of its proper divisors (1).

101804321 is an equidigital number, since it uses as much as digits as its factorization.

101804321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 101804321 is about 10089.8127336438. The cubic root of 101804321 is about 466.9338983606.

The spelling of 101804321 in words is "one hundred one million, eight hundred four thousand, three hundred twenty-one".