340531223 has 2 divisors, whose sum is σ = 340531224. Its totient is φ = 340531222.

The previous prime is 340531181. The next prime is 340531271. The reversal of 340531223 is 322135043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340531223 - 2¹⁸ = 340269079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340531523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170265611 + 170265612.

It is an arithmetic number, because the mean of its divisors is an integer number (170265612).

Almost surely, 2^340531223 is an apocalyptic number.

340531223 is a deficient number, since it is larger than the sum of its proper divisors (1).

340531223 is an equidigital number, since it uses as much as digits as its factorization.

340531223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 340531223 is about 18453.4880984599. The cubic root of 340531223 is about 698.3165143612.

Adding to 340531223 its reverse (322135043), we get a palindrome (662666266).

The spelling of 340531223 in words is "three hundred forty million, five hundred thirty-one thousand, two hundred twenty-three".