340430511 has 8 divisors (see below), whose sum is σ = 454128304. Its totient is φ = 226843200.

The previous prime is 340430477. The next prime is 340430537. The reversal of 340430511 is 115034043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340430511 - 2¹⁹ = 339906223 is a prime.

It is a super-2 number, since 2×340430511² = 231785865639442242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340430591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20140 + ... + 32961.

It is an arithmetic number, because the mean of its divisors is an integer number (56766038).

Almost surely, 2^340430511 is an apocalyptic number.

340430511 is a deficient number, since it is larger than the sum of its proper divisors (113697793).

340430511 is a wasteful number, since it uses less digits than its factorization.

340430511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55241.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 340430511 is about 18450.7590900754. The cubic root of 340430511 is about 698.2476652784.

Adding to 340430511 its reverse (115034043), we get a palindrome (455464554).

The spelling of 340430511 in words is "three hundred forty million, four hundred thirty thousand, five hundred eleven".