349251321 has 12 divisors (see below), whose sum is σ = 482283152. Its totient is φ = 224803824.

The previous prime is 349251319. The next prime is 349251323. The reversal of 349251321 is 123152943.

It is an interprime number because it is at equal distance from previous prime (349251319) and next prime (349251323).

It is not a de Polignac number, because 349251321 - 2¹ = 349251319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349251323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66691 + ... + 71736.

Almost surely, 2^349251321 is an apocalyptic number.

It is an amenable number.

349251321 is a deficient number, since it is larger than the sum of its proper divisors (133031831).

349251321 is a wasteful number, since it uses less digits than its factorization.

349251321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138488 (or 138459 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 349251321 is about 18688.2669340953. The cubic root of 349251321 is about 704.2270226260.

The spelling of 349251321 in words is "three hundred forty-nine million, two hundred fifty-one thousand, three hundred twenty-one".