340440311 has 8 divisors (see below), whose sum is σ = 343592304. Its totient is φ = 337296960.

The previous prime is 340440307. The next prime is 340440313. The reversal of 340440311 is 113044043.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 340440311 - 2² = 340440307 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 (340440313) 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, 97451 + ... + 100883.

It is an arithmetic number, because the mean of its divisors is an integer number (42949038).

Almost surely, 2^340440311 is an apocalyptic number.

340440311 is a deficient number, since it is larger than the sum of its proper divisors (3151993).

340440311 is a wasteful number, since it uses less digits than its factorization.

340440311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 340440311 is about 18451.0246598936. The cubic root of 340440311 is about 698.2543653843.

Adding to 340440311 its reverse (113044043), we get a palindrome (453484354).

The spelling of 340440311 in words is "three hundred forty million, four hundred forty thousand, three hundred eleven".