340740511 has 4 divisors (see below), whose sum is σ = 349949752. Its totient is φ = 331531272.

The previous prime is 340740473. The next prime is 340740523. The reversal of 340740511 is 115047043.

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

It is a cyclic number.

It is not a de Polignac number, because 340740511 - 2⁷ = 340740383 is a prime.

It is a super-2 number, since 2×340740511² = 232208191673082242, 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 (340740581) 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, 4604565 + ... + 4604638.

It is an arithmetic number, because the mean of its divisors is an integer number (87487438).

Almost surely, 2^340740511 is an apocalyptic number.

340740511 is a deficient number, since it is larger than the sum of its proper divisors (9209241).

340740511 is an equidigital number, since it uses as much as digits as its factorization.

340740511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9209240.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 340740511 is about 18459.1579168715. The cubic root of 340740511 is about 698.4595451381.

Adding to 340740511 its reverse (115047043), we get a palindrome (455787554).

The spelling of 340740511 in words is "three hundred forty million, seven hundred forty thousand, five hundred eleven".