340430455 has 4 divisors (see below), whose sum is σ = 408516552. Its totient is φ = 272344360.

The previous prime is 340430443. The next prime is 340430459. The reversal of 340430455 is 554034043.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-340430455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340430459) 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, 34043041 + ... + 34043050.

It is an arithmetic number, because the mean of its divisors is an integer number (102129138).

Almost surely, 2^340430455 is an apocalyptic number.

340430455 is a deficient number, since it is larger than the sum of its proper divisors (68086097).

340430455 is an equidigital number, since it uses as much as digits as its factorization.

340430455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68086096.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 340430455 is about 18450.7575725226. The cubic root of 340430455 is about 698.2476269917.

Adding to 340430455 its reverse (554034043), we get a palindrome (894464498).

The spelling of 340430455 in words is "three hundred forty million, four hundred thirty thousand, four hundred fifty-five".