312963988 has 12 divisors (see below), whose sum is σ = 561045492. Its totient is φ = 152665280.

The previous prime is 312963971. The next prime is 312964007. The reversal of 312963988 is 889369213.

It can be written as a sum of positive squares in 2 ways, for example, as 183277444 + 129686544 = 13538^2 + 11388^2 .

It is a super-3 number, since 3×312963988³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 953995 + ... + 954322.

It is an arithmetic number, because the mean of its divisors is an integer number (46753791).

Almost surely, 2^312963988 is an apocalyptic number.

It is an amenable number.

312963988 is a deficient number, since it is larger than the sum of its proper divisors (248081504).

312963988 is a wasteful number, since it uses less digits than its factorization.

312963988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908362 (or 1908360 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 312963988 is about 17690.7882243839. The cubic root of 312963988 is about 678.9400933177.

The spelling of 312963988 in words is "three hundred twelve million, nine hundred sixty-three thousand, nine hundred eighty-eight".