203313201109 has 2 divisors, whose sum is σ = 203313201110. Its totient is φ = 203313201108.

The previous prime is 203313201107. The next prime is 203313201149. The reversal of 203313201109 is 901102313302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201574060900 + 1739140209 = 448970^2 + 41703^2 .

It is a cyclic number.

It is not a de Polignac number, because 203313201109 - 2¹ = 203313201107 is a prime.

Together with 203313201107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203313201103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101656600554 + 101656600555.

It is an arithmetic number, because the mean of its divisors is an integer number (101656600555).

Almost surely, 2^203313201109 is an apocalyptic number.

It is an amenable number.

203313201109 is a deficient number, since it is larger than the sum of its proper divisors (1).

203313201109 is an equidigital number, since it uses as much as digits as its factorization.

203313201109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 203313201109 in words is "two hundred three billion, three hundred thirteen million, two hundred one thousand, one hundred nine".