4312505 has 4 divisors (see below), whose sum is σ = 5175012. Its totient is φ = 3450000.

The previous prime is 4312501. The next prime is 4312519. The reversal of 4312505 is 5052134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1281424 + 3031081 = 1132^2 + 1741^2 .

It is not a de Polignac number, because 4312505 - 2² = 4312501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4312501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431246 + ... + 431255.

It is an arithmetic number, because the mean of its divisors is an integer number (1293753).

Almost surely, 2^4312505 is an apocalyptic number.

It is an amenable number.

4312505 is a deficient number, since it is larger than the sum of its proper divisors (862507).

4312505 is an equidigital number, since it uses as much as digits as its factorization.

4312505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862506.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 4312505 is about 2076.6571695877. The cubic root of 4312505 is about 162.7708146947.

Adding to 4312505 its reverse (5052134), we get a palindrome (9364639).

The spelling of 4312505 in words is "four million, three hundred twelve thousand, five hundred five".