203300312231 has 2 divisors, whose sum is σ = 203300312232. Its totient is φ = 203300312230.

The previous prime is 203300312123. The next prime is 203300312251. The reversal of 203300312231 is 132213003302.

Together with previous prime (203300312123) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (203300312251) can be obtained adding 203300312231 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203300312231 is a prime.

It is a super-2 number, since 2×203300312231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203300312251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101650156115 + 101650156116.

It is an arithmetic number, because the mean of its divisors is an integer number (101650156116).

Almost surely, 2^203300312231 is an apocalyptic number.

203300312231 is a deficient number, since it is larger than the sum of its proper divisors (1).

203300312231 is an equidigital number, since it uses as much as digits as its factorization.

203300312231 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 203300312231 its reverse (132213003302), we get a palindrome (335513315533).

The spelling of 203300312231 in words is "two hundred three billion, three hundred million, three hundred twelve thousand, two hundred thirty-one".