312987885845204 has 6 divisors (see below), whose sum is σ = 547728800229114. Its totient is φ = 156493942922600.

The previous prime is 312987885845161. The next prime is 312987885845207. The reversal of 312987885845204 is 402548588789213.

It can be written as a sum of positive squares in only one way, i.e., 312563305891600 + 424579953604 = 17679460^2 + 651598^2 .

It is a super-2 number, since 2×312987885845204² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312987885845207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39123485730647 + ... + 39123485730654.

It is an arithmetic number, because the mean of its divisors is an integer number (91288133371519).

Almost surely, 2^{312987885845204} is an apocalyptic number.

It is an amenable number.

312987885845204 is a deficient number, since it is larger than the sum of its proper divisors (234740914383910).

312987885845204 is a wasteful number, since it uses less digits than its factorization.

312987885845204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78246971461305 (or 78246971461303 counting only the distinct ones).

The product of its (nonzero) digits is 1238630400, while the sum is 74.

The spelling of 312987885845204 in words is "three hundred twelve trillion, nine hundred eighty-seven billion, eight hundred eighty-five million, eight hundred forty-five thousand, two hundred four".