4313521 has 4 divisors (see below), whose sum is σ = 4318272. Its totient is φ = 4308772.

The previous prime is 4313509. The next prime is 4313531. The reversal of 4313521 is 1253134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4313521 - 2¹¹ = 4311473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4313501) 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, 541 + ... + 2986.

It is an arithmetic number, because the mean of its divisors is an integer number (1079568).

Almost surely, 2^4313521 is an apocalyptic number.

It is an amenable number.

4313521 is a deficient number, since it is larger than the sum of its proper divisors (4751).

4313521 is a wasteful number, since it uses less digits than its factorization.

4313521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750.

The product of its digits is 360, while the sum is 19.

The square root of 4313521 is about 2076.9017790931. The cubic root of 4313521 is about 162.7835962963.

Adding to 4313521 its reverse (1253134), we get a palindrome (5566655).

The spelling of 4313521 in words is "four million, three hundred thirteen thousand, five hundred twenty-one".