340756223 has 2 divisors, whose sum is σ = 340756224. Its totient is φ = 340756222.

The previous prime is 340756217. The next prime is 340756231. The reversal of 340756223 is 322657043.

It is a weak prime.

It is an emirp because it is prime and its reverse (322657043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340756223 - 2²⁰ = 339707647 is a prime.

It is a super-2 number, since 2×340756223² = 232229607026451458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340756223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340756243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170378111 + 170378112.

It is an arithmetic number, because the mean of its divisors is an integer number (170378112).

Almost surely, 2^340756223 is an apocalyptic number.

340756223 is a deficient number, since it is larger than the sum of its proper divisors (1).

340756223 is an equidigital number, since it uses as much as digits as its factorization.

340756223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 340756223 is about 18459.5835001768. The cubic root of 340756223 is about 698.4702806072.

The spelling of 340756223 in words is "three hundred forty million, seven hundred fifty-six thousand, two hundred twenty-three".