353323421 has 4 divisors (see below), whose sum is σ = 385443744. Its totient is φ = 321203100.

The previous prime is 353323417. The next prime is 353323423. The reversal of 353323421 is 124323353.

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 not a de Polignac number, because 353323421 - 2² = 353323417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353323423) 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, 16060145 + ... + 16060166.

It is an arithmetic number, because the mean of its divisors is an integer number (96360936).

Almost surely, 2^353323421 is an apocalyptic number.

It is an amenable number.

353323421 is a deficient number, since it is larger than the sum of its proper divisors (32120323).

353323421 is a wasteful number, since it uses less digits than its factorization.

353323421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32120322.

The product of its digits is 6480, while the sum is 26.

The square root of 353323421 is about 18796.8992389702. The cubic root of 353323421 is about 706.9534348714.

Adding to 353323421 its reverse (124323353), we get a palindrome (477646774).

The spelling of 353323421 in words is "three hundred fifty-three million, three hundred twenty-three thousand, four hundred twenty-one".