34321021 has 6 divisors (see below), whose sum is σ = 39924510. Its totient is φ = 29417976.

The previous prime is 34321003. The next prime is 34321031. The reversal of 34321021 is 12012343.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18232900 + 16088121 = 4270^2 + 4011^2 .

It is not a de Polignac number, because 34321021 - 2⁷ = 34320893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34320986 and 34321004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34321031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 350166 + ... + 350263.

It is an arithmetic number, because the mean of its divisors is an integer number (6654085).

Almost surely, 2^34321021 is an apocalyptic number.

It is an amenable number.

34321021 is a deficient number, since it is larger than the sum of its proper divisors (5603489).

34321021 is an equidigital number, since it uses as much as digits as its factorization.

34321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700443 (or 700436 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 34321021 is about 5858.4145466158. The cubic root of 34321021 is about 324.9775795184.

Adding to 34321021 its reverse (12012343), we get a palindrome (46333364).

The spelling of 34321021 in words is "thirty-four million, three hundred twenty-one thousand, twenty-one".