312028115 has 32 divisors (see below), whose sum is σ = 460577664. Its totient is φ = 198051840.

The previous prime is 312028111. The next prime is 312028121. The reversal of 312028115 is 511820213.

It is a happy number.

It is not a de Polignac number, because 312028115 - 2² = 312028111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312028111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31997 + ... + 40593.

It is an arithmetic number, because the mean of its divisors is an integer number (14393052).

Almost surely, 2^312028115 is an apocalyptic number.

312028115 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

312028115 is a deficient number, since it is larger than the sum of its proper divisors (148549549).

312028115 is a wasteful number, since it uses less digits than its factorization.

312028115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8687.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 312028115 is about 17664.3175639479. The cubic root of 312028115 is about 678.2626606212.

Adding to 312028115 its reverse (511820213), we get a palindrome (823848328).

The spelling of 312028115 in words is "three hundred twelve million, twenty-eight thousand, one hundred fifteen".