349631 has 4 divisors (see below), whose sum is σ = 352512. Its totient is φ = 346752.

The previous prime is 349603. The next prime is 349637. The reversal of 349631 is 136943.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 349631 - 2⁶ = 349567 is a prime.

It is a super-2 number, since 2×349631² = 244483672322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 4 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 349631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250 + ... + 1503.

It is an arithmetic number, because the mean of its divisors is an integer number (88128).

2³⁴⁹⁶³¹ is an apocalyptic number.

349631 is a deficient number, since it is larger than the sum of its proper divisors (2881).

349631 is a wasteful number, since it uses less digits than its factorization.

349631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880.

The product of its digits is 1944, while the sum is 26.

The square root of 349631 is about 591.2960341487. The cubic root of 349631 is about 70.4482123907.

The spelling of 349631 in words is "three hundred forty-nine thousand, six hundred thirty-one".