349321 has 6 divisors (see below), whose sum is σ = 406410. Its totient is φ = 299376.

The previous prime is 349313. The next prime is 349331. The reversal of 349321 is 123943.

It can be written as a sum of positive squares in only one way, i.e., 313600 + 35721 = 560^2 + 189^2 .

It is not a de Polignac number, because 349321 - 2³ = 349313 is a prime.

It is a super-2 number, since 2×349321² = 244050322082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 349292 and 349301.

It is not an unprimeable number, because it can be changed into a prime (349331) 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, 3516 + ... + 3613.

It is an arithmetic number, because the mean of its divisors is an integer number (67735).

2³⁴⁹³²¹ is an apocalyptic number.

It is an amenable number.

349321 is a deficient number, since it is larger than the sum of its proper divisors (57089).

349321 is an equidigital number, since it uses as much as digits as its factorization.

349321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7143 (or 7136 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 349321 is about 591.0338399787. The cubic root of 349321 is about 70.4273852868.

The spelling of 349321 in words is "three hundred forty-nine thousand, three hundred twenty-one".