312012431903 has 2 divisors, whose sum is σ = 312012431904. Its totient is φ = 312012431902.

The previous prime is 312012431869. The next prime is 312012431909. The reversal of 312012431903 is 309134210213.

It is a strong prime.

It is an emirp because it is prime and its reverse (309134210213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312012431903 - 2¹⁸ = 312012169759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312012431909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156006215951 + 156006215952.

It is an arithmetic number, because the mean of its divisors is an integer number (156006215952).

Almost surely, 2^312012431903 is an apocalyptic number.

312012431903 is a deficient number, since it is larger than the sum of its proper divisors (1).

312012431903 is an equidigital number, since it uses as much as digits as its factorization.

312012431903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 312012431903 in words is "three hundred twelve billion, twelve million, four hundred thirty-one thousand, nine hundred three".