340223231 has 2 divisors, whose sum is σ = 340223232. Its totient is φ = 340223230.

The previous prime is 340223203. The next prime is 340223263. The reversal of 340223231 is 132322043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340223231 - 2⁶ = 340223167 is a prime.

It is a super-2 number, since 2×340223231² = 231503693824158722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340223201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170111615 + 170111616.

It is an arithmetic number, because the mean of its divisors is an integer number (170111616).

Almost surely, 2^340223231 is an apocalyptic number.

340223231 is a deficient number, since it is larger than the sum of its proper divisors (1).

340223231 is an equidigital number, since it uses as much as digits as its factorization.

340223231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 340223231 is about 18445.1411217155. The cubic root of 340223231 is about 698.1059210691.

Adding to 340223231 its reverse (132322043), we get a palindrome (472545274).

The spelling of 340223231 in words is "three hundred forty million, two hundred twenty-three thousand, two hundred thirty-one".