340512323 has 2 divisors, whose sum is σ = 340512324. Its totient is φ = 340512322.

The previous prime is 340512311. The next prime is 340512343. The reversal of 340512323 is 323215043.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340512323 is a prime.

It is a super-2 number, since 2×340512323² = 231897284229712658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340512343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170256161 + 170256162.

It is an arithmetic number, because the mean of its divisors is an integer number (170256162).

Almost surely, 2^340512323 is an apocalyptic number.

340512323 is a deficient number, since it is larger than the sum of its proper divisors (1).

340512323 is an equidigital number, since it uses as much as digits as its factorization.

340512323 is an evil number, because the sum of its binary digits is even.

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

The square root of 340512323 is about 18452.9759930478. The cubic root of 340512323 is about 698.3035949132.

Adding to 340512323 its reverse (323215043), we get a palindrome (663727366).

The spelling of 340512323 in words is "three hundred forty million, five hundred twelve thousand, three hundred twenty-three".