203312089 has 2 divisors, whose sum is σ = 203312090. Its totient is φ = 203312088.

The previous prime is 203312063. The next prime is 203312117. The reversal of 203312089 is 980213302.

It is an a-pointer prime, because the next prime (203312117) can be obtained adding 203312089 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165894400 + 37417689 = 12880^2 + 6117^2 .

It is a cyclic number.

It is not a de Polignac number, because 203312089 - 2¹³ = 203303897 is a prime.

It is not a weakly prime, because it can be changed into another prime (203312189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101656044 + 101656045.

It is an arithmetic number, because the mean of its divisors is an integer number (101656045).

Almost surely, 2^203312089 is an apocalyptic number.

It is an amenable number.

203312089 is a deficient number, since it is larger than the sum of its proper divisors (1).

203312089 is an equidigital number, since it uses as much as digits as its factorization.

203312089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 203312089 is about 14258.7548194083. The cubic root of 203312089 is about 588.0140919772.

The spelling of 203312089 in words is "two hundred three million, three hundred twelve thousand, eighty-nine".