203201233109 has 12 divisors (see below), whose sum is σ = 236972375244. Its totient is φ = 173733747264.

The previous prime is 203201233093. The next prime is 203201233127. The reversal of 203201233109 is 901332102302.

It can be written as a sum of positive squares in 2 ways, for example, as 101535910609 + 101665322500 = 318647^2 + 318850^2 .

It is not a de Polignac number, because 203201233109 - 2⁴ = 203201233093 is a prime.

It is a super-2 number, since 2×203201233109² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203201233709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5203424 + ... + 5242329.

It is an arithmetic number, because the mean of its divisors is an integer number (19747697937).

Almost surely, 2^203201233109 is an apocalyptic number.

It is an amenable number.

203201233109 is a deficient number, since it is larger than the sum of its proper divisors (33771142135).

203201233109 is a wasteful number, since it uses less digits than its factorization.

203201233109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10446164 (or 10446157 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 203201233109 in words is "two hundred three billion, two hundred one million, two hundred thirty-three thousand, one hundred nine".