343240231 has 4 divisors (see below), whose sum is σ = 352517032. Its totient is φ = 333963432.

The previous prime is 343240207. The next prime is 343240253. The reversal of 343240231 is 132042343.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132042343 = 19 ⋅6949597.

It is a cyclic number.

It is not a de Polignac number, because 343240231 - 2¹³ = 343232039 is a prime.

It is a super-2 number, since 2×343240231² = 235627712353866722, 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 (343240631) 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, 4638345 + ... + 4638418.

It is an arithmetic number, because the mean of its divisors is an integer number (88129258).

Almost surely, 2^343240231 is an apocalyptic number.

343240231 is a deficient number, since it is larger than the sum of its proper divisors (9276801).

343240231 is an equidigital number, since it uses as much as digits as its factorization.

343240231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9276800.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 343240231 is about 18526.7436696253. The cubic root of 343240231 is about 700.1633843111.

Adding to 343240231 its reverse (132042343), we get a palindrome (475282574).

The spelling of 343240231 in words is "three hundred forty-three million, two hundred forty thousand, two hundred thirty-one".