312303515203 has 2 divisors, whose sum is σ = 312303515204. Its totient is φ = 312303515202.

The previous prime is 312303515201. The next prime is 312303515263. The reversal of 312303515203 is 302515303213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312303515203 - 2¹ = 312303515201 is a prime.

Together with 312303515201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (312303515201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156151757601 + 156151757602.

It is an arithmetic number, because the mean of its divisors is an integer number (156151757602).

Almost surely, 2^312303515203 is an apocalyptic number.

312303515203 is a deficient number, since it is larger than the sum of its proper divisors (1).

312303515203 is an equidigital number, since it uses as much as digits as its factorization.

312303515203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 28.

Adding to 312303515203 its reverse (302515303213), we get a palindrome (614818818416).

The spelling of 312303515203 in words is "three hundred twelve billion, three hundred three million, five hundred fifteen thousand, two hundred three".