240340311 has 8 divisors (see below), whose sum is σ = 356059760. Its totient is φ = 160226856.

The previous prime is 240340283. The next prime is 240340327. The reversal of 240340311 is 113043042.

It is not a de Polignac number, because 240340311 - 2⁵ = 240340279 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 (240340211) 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, 4450720 + ... + 4450773.

It is an arithmetic number, because the mean of its divisors is an integer number (44507470).

Almost surely, 2^240340311 is an apocalyptic number.

240340311 is a deficient number, since it is larger than the sum of its proper divisors (115719449).

240340311 is an equidigital number, since it uses as much as digits as its factorization.

240340311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8901502 (or 8901496 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 240340311 is about 15502.9129843394. The cubic root of 240340311 is about 621.7400917458.

Adding to 240340311 its reverse (113043042), we get a palindrome (353383353).

The spelling of 240340311 in words is "two hundred forty million, three hundred forty thousand, three hundred eleven".