4312005 has 16 divisors (see below), whose sum is σ = 6946944. Its totient is φ = 2283840.

The previous prime is 4312003. The next prime is 4312013. The reversal of 4312005 is 5002134.

It is not a de Polignac number, because 4312005 - 2¹ = 4312003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

4312005 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4312003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1440 + ... + 3270.

It is an arithmetic number, because the mean of its divisors is an integer number (434184).

Almost surely, 2^4312005 is an apocalyptic number.

It is an amenable number.

4312005 is a deficient number, since it is larger than the sum of its proper divisors (2634939).

4312005 is a wasteful number, since it uses less digits than its factorization.

4312005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 4312005 is about 2076.5367803148. The cubic root of 4312005 is about 162.7645237994.

Adding to 4312005 its reverse (5002134), we get a palindrome (9314139).

The spelling of 4312005 in words is "four million, three hundred twelve thousand, five".