312345445 has 8 divisors (see below), whose sum is σ = 376982136. Its totient is φ = 248431296.

The previous prime is 312345443. The next prime is 312345461. The reversal of 312345445 is 544543213.

It can be written as a sum of positive squares in 4 ways, for example, as 92179201 + 220166244 = 9601^2 + 14838^2 .

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 312345445 - 2¹ = 312345443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312345443) by changing a digit.

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, 179682 + ... + 181411.

It is an arithmetic number, because the mean of its divisors is an integer number (47122767).

Almost surely, 2^312345445 is an apocalyptic number.

It is an amenable number.

312345445 is a deficient number, since it is larger than the sum of its proper divisors (64636691).

312345445 is a wasteful number, since it uses less digits than its factorization.

312345445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361271.

The product of its digits is 28800, while the sum is 31.

The square root of 312345445 is about 17673.2975134806. The cubic root of 312345445 is about 678.4925118830.

Adding to 312345445 its reverse (544543213), we get a palindrome (856888658).

The spelling of 312345445 in words is "three hundred twelve million, three hundred forty-five thousand, four hundred forty-five".