312066986 has 36 divisors (see below), whose sum is σ = 598550274. Its totient is φ = 121579920.

The previous prime is 312066983. The next prime is 312067009. The reversal of 312066986 is 689660213.

It can be written as a sum of positive squares in only one way, i.e., 249166225 + 62900761 = 15785^2 + 7931^2 .

It is a super-2 number, since 2×312066986² = 194771607502248392, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312066983) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1301 + ... + 25016.

Almost surely, 2^312066986 is an apocalyptic number.

312066986 is a deficient number, since it is larger than the sum of its proper divisors (286483288).

312066986 is a wasteful number, since it uses less digits than its factorization.

312066986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26355 (or 26337 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 312066986 is about 17665.4177986257. The cubic root of 312066986 is about 678.2908243794.

The spelling of 312066986 in words is "three hundred twelve million, sixty-six thousand, nine hundred eighty-six".