343993231 has 4 divisors (see below), whose sum is σ = 344042464. Its totient is φ = 343944000.

The previous prime is 343993229. The next prime is 343993259. The reversal of 343993231 is 132399343.

It is a happy number.

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 343993231 - 2¹ = 343993229 is a prime.

It is a super-2 number, since 2×343993231² = 236662685947638722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343993201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11970 + ... + 28831.

It is an arithmetic number, because the mean of its divisors is an integer number (86010616).

Almost surely, 2^343993231 is an apocalyptic number.

343993231 is a deficient number, since it is larger than the sum of its proper divisors (49233).

343993231 is an equidigital number, since it uses as much as digits as its factorization.

343993231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49232.

The product of its digits is 52488, while the sum is 37.

The square root of 343993231 is about 18547.0545100833. The cubic root of 343993231 is about 700.6750162136.

The spelling of 343993231 in words is "three hundred forty-three million, nine hundred ninety-three thousand, two hundred thirty-one".