34203521 has 4 divisors (see below), whose sum is σ = 37312944. Its totient is φ = 31094100.

The previous prime is 34203479. The next prime is 34203527. The reversal of 34203521 is 12530243.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34203521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34203493 and 34203502.

It is not an unprimeable number, because it can be changed into a prime (34203527) 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 3 ways as a sum of consecutive naturals, for example, 1554695 + ... + 1554716.

It is an arithmetic number, because the mean of its divisors is an integer number (9328236).

Almost surely, 2^34203521 is an apocalyptic number.

It is an amenable number.

34203521 is a deficient number, since it is larger than the sum of its proper divisors (3109423).

34203521 is a wasteful number, since it uses less digits than its factorization.

34203521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109422.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 34203521 is about 5848.3776382857. The cubic root of 34203521 is about 324.6062956465.

Adding to 34203521 its reverse (12530243), we get a palindrome (46733764).

The spelling of 34203521 in words is "thirty-four million, two hundred three thousand, five hundred twenty-one".