873086321 has 2 divisors, whose sum is σ = 873086322. Its totient is φ = 873086320.

The previous prime is 873086317. The next prime is 873086327. The reversal of 873086321 is 123680378.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872611600 + 474721 = 29540^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 873086321 - 2² = 873086317 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (873086327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436543160 + 436543161.

It is an arithmetic number, because the mean of its divisors is an integer number (436543161).

Almost surely, 2^873086321 is an apocalyptic number.

It is an amenable number.

873086321 is a deficient number, since it is larger than the sum of its proper divisors (1).

873086321 is an equidigital number, since it uses as much as digits as its factorization.

873086321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 873086321 is about 29548.0341308859. The cubic root of 873086321 is about 955.7677993419.

The spelling of 873086321 in words is "eight hundred seventy-three million, eighty-six thousand, three hundred twenty-one".