312445505 has 8 divisors (see below), whose sum is σ = 375446400. Its totient is φ = 249615216.

The previous prime is 312445493. The next prime is 312445537. The reversal of 312445505 is 505544213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312445505 - 2⁴ = 312445489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38585 + ... + 45974.

It is an arithmetic number, because the mean of its divisors is an integer number (46930800).

Almost surely, 2^312445505 is an apocalyptic number.

It is an amenable number.

312445505 is a deficient number, since it is larger than the sum of its proper divisors (63000895).

312445505 is an equidigital number, since it uses as much as digits as its factorization.

312445505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85303.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 312445505 is about 17676.1281110994. The cubic root of 312445505 is about 678.5649559388.

Adding to 312445505 its reverse (505544213), we get a palindrome (817989718).

The spelling of 312445505 in words is "three hundred twelve million, four hundred forty-five thousand, five hundred five".