312322505 has 16 divisors (see below), whose sum is σ = 409999104. Its totient is φ = 226510080.

The previous prime is 312322477. The next prime is 312322519. The reversal of 312322505 is 505223213.

It is not a de Polignac number, because 312322505 - 2²² = 308128201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12449 + ... + 27921.

It is an arithmetic number, because the mean of its divisors is an integer number (25624944).

Almost surely, 2^312322505 is an apocalyptic number.

It is an amenable number.

312322505 is a deficient number, since it is larger than the sum of its proper divisors (97676599).

312322505 is a wasteful number, since it uses less digits than its factorization.

312322505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15856.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 312322505 is about 17672.6484998712. The cubic root of 312322505 is about 678.4759010018.

Adding to 312322505 its reverse (505223213), we get a palindrome (817545718).

The spelling of 312322505 in words is "three hundred twelve million, three hundred twenty-two thousand, five hundred five".