312116240 has 20 divisors (see below), whose sum is σ = 725670444. Its totient is φ = 124846464.

The previous prime is 312116197. The next prime is 312116263. The reversal of 312116240 is 42611213.

It can be written as a sum of positive squares in 2 ways, for example, as 39337984 + 272778256 = 6272^2 + 16516^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 1950647 + ... + 1950806.

Almost surely, 2^312116240 is an apocalyptic number.

It is an amenable number.

312116240 is an abundant number, since it is smaller than the sum of its proper divisors (413554204).

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

312116240 is a wasteful number, since it uses less digits than its factorization.

312116240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901466 (or 3901460 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 312116240 is about 17666.8118233030. The cubic root of 312116240 is about 678.3265077212.

Adding to 312116240 its reverse (42611213), we get a palindrome (354727453).

The spelling of 312116240 in words is "three hundred twelve million, one hundred sixteen thousand, two hundred forty".