311420343255 has 32 divisors (see below), whose sum is σ = 569720729088. Its totient is φ = 142296988800.

The previous prime is 311420343251. The next prime is 311420343317. The reversal of 311420343255 is 552343024113.

It is not a de Polignac number, because 311420343255 - 2² = 311420343251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311420343251) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 467841 + ... + 917450.

It is an arithmetic number, because the mean of its divisors is an integer number (17803772784).

Almost surely, 2^311420343255 is an apocalyptic number.

311420343255 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

311420343255 is a deficient number, since it is larger than the sum of its proper divisors (258300385833).

311420343255 is a wasteful number, since it uses less digits than its factorization.

311420343255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387447.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 311420343255 its reverse (552343024113), we get a palindrome (863763367368).

The spelling of 311420343255 in words is "three hundred eleven billion, four hundred twenty million, three hundred forty-three thousand, two hundred fifty-five".