311343320232544 has 24 divisors (see below), whose sum is σ = 612957645699840. Its totient is φ = 155671537197696.

The previous prime is 311343320232493. The next prime is 311343320232617. The reversal of 311343320232544 is 445232023343113.

It is a junction number, because it is equal to n+sod(n) for n = 311343320232497 and 311343320232506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48141537 + ... + 54224479.

It is an arithmetic number, because the mean of its divisors is an integer number (25539901904160).

Almost surely, 2^{311343320232544} is an apocalyptic number.

It is an amenable number.

311343320232544 is a deficient number, since it is larger than the sum of its proper divisors (301614325467296).

311343320232544 is a wasteful number, since it uses less digits than its factorization.

311343320232544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682422 (or 7682414 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 40.

Adding to 311343320232544 its reverse (445232023343113), we get a palindrome (756575343575657).

The spelling of 311343320232544 in words is "three hundred eleven trillion, three hundred forty-three billion, three hundred twenty million, two hundred thirty-two thousand, five hundred forty-four".