348021 has 6 divisors (see below), whose sum is σ = 502710. Its totient is φ = 232008.

The previous prime is 348017. The next prime is 348031. The reversal of 348021 is 120843.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 239121 + 108900 = 489^2 + 330^2 .

It is not a de Polignac number, because 348021 - 2² = 348017 is a prime.

It is a super-2 number, since 2×348021² = 242237232882, which contains 22 as substring.

It is an Ulam number.

348021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 347985 and 348003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (348001) 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, 19326 + ... + 19343.

It is an arithmetic number, because the mean of its divisors is an integer number (83785).

2³⁴⁸⁰²¹ is an apocalyptic number.

It is an amenable number.

348021 is a deficient number, since it is larger than the sum of its proper divisors (154689).

348021 is a wasteful number, since it uses less digits than its factorization.

348021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38675 (or 38672 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 348021 is about 589.9330470486. The cubic root of 348021 is about 70.3399113863.

Adding to 348021 its reverse (120843), we get a palindrome (468864).

The spelling of 348021 in words is "three hundred forty-eight thousand, twenty-one".