340420013 has 4 divisors (see below), whose sum is σ = 347663040. Its totient is φ = 333176988.

The previous prime is 340419997. The next prime is 340420027. The reversal of 340420013 is 310024043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310024043 = 7 ⋅44289149.

It is a cyclic number.

It is not a de Polignac number, because 340420013 - 2⁴ = 340419997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340419973 and 340420000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340420043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3621443 + ... + 3621536.

It is an arithmetic number, because the mean of its divisors is an integer number (86915760).

Almost surely, 2^340420013 is an apocalyptic number.

It is an amenable number.

340420013 is a deficient number, since it is larger than the sum of its proper divisors (7243027).

340420013 is an equidigital number, since it uses as much as digits as its factorization.

340420013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7243026.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 340420013 is about 18450.4746009418. The cubic root of 340420013 is about 698.2404878182.

Adding to 340420013 its reverse (310024043), we get a palindrome (650444056).

The spelling of 340420013 in words is "three hundred forty million, four hundred twenty thousand, thirteen".