343653331 has 16 divisors (see below), whose sum is σ = 402914304. Its totient is φ = 286991424.

The previous prime is 343653319. The next prime is 343653337. The reversal of 343653331 is 133356343.

It is a cyclic number.

It is not a de Polignac number, because 343653331 - 2⁹ = 343652819 is a prime.

It is a super-2 number, since 2×343653331² = 236195223814791122, 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 = 343653293 and 343653302.

It is not an unprimeable number, because it can be changed into a prime (343653337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74416 + ... + 78898.

It is an arithmetic number, because the mean of its divisors is an integer number (25182144).

Almost surely, 2^343653331 is an apocalyptic number.

343653331 is a deficient number, since it is larger than the sum of its proper divisors (59260973).

343653331 is a wasteful number, since it uses less digits than its factorization.

343653331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770.

The product of its digits is 29160, while the sum is 31.

The square root of 343653331 is about 18537.8890653710. The cubic root of 343653331 is about 700.4441609704. Note that the first 3 decimals are identical.

The spelling of 343653331 in words is "three hundred forty-three million, six hundred fifty-three thousand, three hundred thirty-one".