340504111 has 4 divisors (see below), whose sum is σ = 358425400. Its totient is φ = 322582824.

The previous prime is 340504079. The next prime is 340504159. The reversal of 340504111 is 111405043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111405043 = 1861 ⋅59863.

It is a cyclic number.

It is not a de Polignac number, because 340504111 - 2⁵ = 340504079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 17921269 = 340504111 / (3 + 4 + 0 + 5 + 0 + 4 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340504211) 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, 8960616 + ... + 8960653.

It is an arithmetic number, because the mean of its divisors is an integer number (89606350).

Almost surely, 2^340504111 is an apocalyptic number.

340504111 is a deficient number, since it is larger than the sum of its proper divisors (17921289).

340504111 is a wasteful number, since it uses less digits than its factorization.

340504111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17921288.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 340504111 is about 18452.7534801720. The cubic root of 340504111 is about 698.2979812983.

Adding to 340504111 its reverse (111405043), we get a palindrome (451909154).

The spelling of 340504111 in words is "three hundred forty million, five hundred four thousand, one hundred eleven".