312012329987 has 2 divisors, whose sum is σ = 312012329988. Its totient is φ = 312012329986.

The previous prime is 312012329983. The next prime is 312012330053. The reversal of 312012329987 is 789923210213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312012329987 - 2² = 312012329983 is a prime.

It is not a weakly prime, because it can be changed into another prime (312012329983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156006164993 + 156006164994.

It is an arithmetic number, because the mean of its divisors is an integer number (156006164994).

Almost surely, 2^312012329987 is an apocalyptic number.

312012329987 is a deficient number, since it is larger than the sum of its proper divisors (1).

312012329987 is an equidigital number, since it uses as much as digits as its factorization.

312012329987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 312012329987 in words is "three hundred twelve billion, twelve million, three hundred twenty-nine thousand, nine hundred eighty-seven".