311053421556 has 36 divisors (see below), whose sum is σ = 786657101412. Its totient is φ = 103633945344.

The previous prime is 311053421519. The next prime is 311053421573. The reversal of 311053421556 is 655124350113.

311053421556 is a `hidden beast` number, since 3 + 1 + 10 + 53 + 42 + 1 + 556 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74939062500 + 236114359056 = 273750^2 + 485916^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×311053421556² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 311053421556.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 2030421 + ... + 2178236.

Almost surely, 2^311053421556 is an apocalyptic number.

311053421556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

311053421556 is an abundant number, since it is smaller than the sum of its proper divisors (475603679856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311053421556 is a wasteful number, since it uses less digits than its factorization.

311053421556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210720 (or 4210715 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 311053421556 its reverse (655124350113), we get a palindrome (966177771669).

The spelling of 311053421556 in words is "three hundred eleven billion, fifty-three million, four hundred twenty-one thousand, five hundred fifty-six".