312130309987 has 8 divisors (see below), whose sum is σ = 322425497600. Its totient is φ = 301849276680.

The previous prime is 312130309927. The next prime is 312130309993. The reversal of 312130309987 is 789903031213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312130309987 - 2³¹ = 309982826339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312130309927) 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 in 7 ways as a sum of consecutive naturals, for example, 3493737 + ... + 3581962.

It is an arithmetic number, because the mean of its divisors is an integer number (40303187200).

Almost surely, 2^312130309987 is an apocalyptic number.

312130309987 is a deficient number, since it is larger than the sum of its proper divisors (10295187613).

312130309987 is a wasteful number, since it uses less digits than its factorization.

312130309987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077153.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 312130309987 in words is "three hundred twelve billion, one hundred thirty million, three hundred nine thousand, nine hundred eighty-seven".