312864380 has 24 divisors (see below), whose sum is σ = 659893920. Its totient is φ = 124597440.

The previous prime is 312864371. The next prime is 312864401. The reversal of 312864380 is 83468213.

It is a happy number.

312864380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 312864380.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29576 + ... + 38735.

It is an arithmetic number, because the mean of its divisors is an integer number (27495580).

Almost surely, 2^312864380 is an apocalyptic number.

It is an amenable number.

312864380 is an abundant number, since it is smaller than the sum of its proper divisors (347029540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312864380 is a wasteful number, since it uses less digits than its factorization.

312864380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68549 (or 68547 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 312864380 is about 17687.9727498659. The cubic root of 312864380 is about 678.8680562321.

The spelling of 312864380 in words is "three hundred twelve million, eight hundred sixty-four thousand, three hundred eighty".