440340231311 has 2 divisors, whose sum is σ = 440340231312. Its totient is φ = 440340231310.

The previous prime is 440340231269. The next prime is 440340231313. The reversal of 440340231311 is 113132043044.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440340231311 - 2³⁴ = 423160362127 is a prime.

It is a super-2 number, since 2×440340231311² (a number of 24 digits) contains 22 as substring.

Together with 440340231313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440340231313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220170115655 + 220170115656.

It is an arithmetic number, because the mean of its divisors is an integer number (220170115656).

Almost surely, 2^440340231311 is an apocalyptic number.

440340231311 is a deficient number, since it is larger than the sum of its proper divisors (1).

440340231311 is an equidigital number, since it uses as much as digits as its factorization.

440340231311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 440340231311 its reverse (113132043044), we get a palindrome (553472274355).

The spelling of 440340231311 in words is "four hundred forty billion, three hundred forty million, two hundred thirty-one thousand, three hundred eleven".