203123003101 has 4 divisors (see below), whose sum is σ = 204468188704. Its totient is φ = 201777817500.

The previous prime is 203123003077. The next prime is 203123003113. The reversal of 203123003101 is 101300321302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203123003101 - 2¹⁹ = 203122478813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123003401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672592575 + ... + 672592876.

It is an arithmetic number, because the mean of its divisors is an integer number (51117047176).

Almost surely, 2^203123003101 is an apocalyptic number.

It is an amenable number.

203123003101 is a deficient number, since it is larger than the sum of its proper divisors (1345185603).

203123003101 is a wasteful number, since it uses less digits than its factorization.

203123003101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345185602.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 203123003101 its reverse (101300321302), we get a palindrome (304423324403).

The spelling of 203123003101 in words is "two hundred three billion, one hundred twenty-three million, three thousand, one hundred one".