203300312123 has 2 divisors, whose sum is σ = 203300312124. Its totient is φ = 203300312122.

The previous prime is 203300312101. The next prime is 203300312231. The reversal of 203300312123 is 321213003302.

Together with next prime (203300312231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203300312123 - 2¹² = 203300308027 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 203300312095 and 203300312104.

It is not a weakly prime, because it can be changed into another prime (203300315123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101650156061 + 101650156062.

It is an arithmetic number, because the mean of its divisors is an integer number (101650156062).

Almost surely, 2^203300312123 is an apocalyptic number.

203300312123 is a deficient number, since it is larger than the sum of its proper divisors (1).

203300312123 is an equidigital number, since it uses as much as digits as its factorization.

203300312123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203300312123 its reverse (321213003302), we get a palindrome (524513315425).

The spelling of 203300312123 in words is "two hundred three billion, three hundred million, three hundred twelve thousand, one hundred twenty-three".