6340409123 has 2 divisors, whose sum is σ = 6340409124. Its totient is φ = 6340409122.

The previous prime is 6340409111. The next prime is 6340409129. The reversal of 6340409123 is 3219040436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6340409123 - 2²⁶ = 6273300259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6340409123.

It is not a weakly prime, because it can be changed into another prime (6340409129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3170204561 + 3170204562.

It is an arithmetic number, because the mean of its divisors is an integer number (3170204562).

Almost surely, 2^6340409123 is an apocalyptic number.

6340409123 is a deficient number, since it is larger than the sum of its proper divisors (1).

6340409123 is an equidigital number, since it uses as much as digits as its factorization.

6340409123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6340409123 is about 79626.6859978487. The cubic root of 6340409123 is about 1850.8551316228.

Adding to 6340409123 its reverse (3219040436), we get a palindrome (9559449559).

The spelling of 6340409123 in words is "six billion, three hundred forty million, four hundred nine thousand, one hundred twenty-three".