4312521 has 12 divisors (see below), whose sum is σ = 6460272. Its totient is φ = 2874852.

The previous prime is 4312519. The next prime is 4312537. The reversal of 4312521 is 1252134.

It is not a de Polignac number, because 4312521 - 2¹ = 4312519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4312494 and 4312503.

It is not an unprimeable number, because it can be changed into a prime (4312501) 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 11 ways as a sum of consecutive naturals, for example, 8631 + ... + 9116.

It is an arithmetic number, because the mean of its divisors is an integer number (538356).

Almost surely, 2^4312521 is an apocalyptic number.

It is an amenable number.

4312521 is a deficient number, since it is larger than the sum of its proper divisors (2147751).

4312521 is an equidigital number, since it uses as much as digits as its factorization.

4312521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17762 (or 17750 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 4312521 is about 2076.6610219292. The cubic root of 4312521 is about 162.7710159953.

Adding to 4312521 its reverse (1252134), we get a palindrome (5564655).

The spelling of 4312521 in words is "four million, three hundred twelve thousand, five hundred twenty-one".