312884644 has 6 divisors (see below), whose sum is σ = 547548134. Its totient is φ = 156442320.

The previous prime is 312884639. The next prime is 312884651. The reversal of 312884644 is 446488213.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 291999744 + 20884900 = 17088^2 + 4570^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312884597 and 312884606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39110577 + ... + 39110584.

Almost surely, 2^312884644 is an apocalyptic number.

It is an amenable number.

312884644 is a deficient number, since it is larger than the sum of its proper divisors (234663490).

312884644 is a wasteful number, since it uses less digits than its factorization.

312884644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78221165 (or 78221163 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 312884644 is about 17688.5455592030. The cubic root of 312884644 is about 678.8827125136.

The spelling of 312884644 in words is "three hundred twelve million, eight hundred eighty-four thousand, six hundred forty-four".