203123430201 has 32 divisors (see below), whose sum is σ = 283738828032. Its totient is φ = 129009957120.

The previous prime is 203123430197. The next prime is 203123430233. The reversal of 203123430201 is 102034321302.

It is not a de Polignac number, because 203123430201 - 2² = 203123430197 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (203123430001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21125271 + ... + 21134883.

It is an arithmetic number, because the mean of its divisors is an integer number (8866838376).

Almost surely, 2^203123430201 is an apocalyptic number.

It is an amenable number.

203123430201 is a deficient number, since it is larger than the sum of its proper divisors (80615397831).

203123430201 is a wasteful number, since it uses less digits than its factorization.

203123430201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10833.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 203123430201 its reverse (102034321302), we get a palindrome (305157751503).

The spelling of 203123430201 in words is "two hundred three billion, one hundred twenty-three million, four hundred thirty thousand, two hundred one".