340480423 has 2 divisors, whose sum is σ = 340480424. Its totient is φ = 340480422.

The previous prime is 340480421. The next prime is 340480451. The reversal of 340480423 is 324084043.

It is an a-pointer prime, because the next prime (340480451) can be obtained adding 340480423 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (324084043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340480423 - 2¹ = 340480421 is a prime.

Together with 340480421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 340480391 and 340480400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340480421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170240211 + 170240212.

It is an arithmetic number, because the mean of its divisors is an integer number (170240212).

Almost surely, 2^340480423 is an apocalyptic number.

340480423 is a deficient number, since it is larger than the sum of its proper divisors (1).

340480423 is an equidigital number, since it uses as much as digits as its factorization.

340480423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 340480423 is about 18452.1116135796. Note that the first 3 decimals coincide. The cubic root of 340480423 is about 698.2817879880.

The spelling of 340480423 in words is "three hundred forty million, four hundred eighty thousand, four hundred twenty-three".