312678172 has 6 divisors (see below), whose sum is σ = 547186808. Its totient is φ = 156339084.

The previous prime is 312678151. The next prime is 312678209. The reversal of 312678172 is 271876213.

It is a super-3 number, since 3×312678172³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39084768 + ... + 39084775.

Almost surely, 2^312678172 is an apocalyptic number.

It is an amenable number.

312678172 is a deficient number, since it is larger than the sum of its proper divisors (234508636).

312678172 is a wasteful number, since it uses less digits than its factorization.

312678172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78169547 (or 78169545 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 312678172 is about 17682.7082767318. The cubic root of 312678172 is about 678.7333485034.

The spelling of 312678172 in words is "three hundred twelve million, six hundred seventy-eight thousand, one hundred seventy-two".