203123010113 has 4 divisors (see below), whose sum is σ = 203129844528. Its totient is φ = 203116175700.

The previous prime is 203123010109. The next prime is 203123010121. The reversal of 203123010113 is 311010321302.

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 203123010113 - 2² = 203123010109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203123010091 and 203123010100.

It is not an unprimeable number, because it can be changed into a prime (203123010913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3372431 + ... + 3432132.

It is an arithmetic number, because the mean of its divisors is an integer number (50782461132).

Almost surely, 2^203123010113 is an apocalyptic number.

It is an amenable number.

203123010113 is a deficient number, since it is larger than the sum of its proper divisors (6834415).

203123010113 is an equidigital number, since it uses as much as digits as its factorization.

203123010113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6834414.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 203123010113 its reverse (311010321302), we get a palindrome (514133331415).

The spelling of 203123010113 in words is "two hundred three billion, one hundred twenty-three million, ten thousand, one hundred thirteen".