311200355412 has 36 divisors (see below), whose sum is σ = 787603572756. Its totient is φ = 103607091840.

The previous prime is 311200355383. The next prime is 311200355509. The reversal of 311200355412 is 214553002113.

311200355412 is a `hidden beast` number, since 3 + 11 + 200 + 35 + 5 + 412 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71574441156 + 239625914256 = 267534^2 + 489516^2 .

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

It is a super-2 number, since 2×311200355412² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5235033 + ... + 5294144.

It is an arithmetic number, because the mean of its divisors is an integer number (21877877021).

Almost surely, 2^311200355412 is an apocalyptic number.

It is an amenable number.

311200355412 is an abundant number, since it is smaller than the sum of its proper divisors (476403217344).

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

311200355412 is a wasteful number, since it uses less digits than its factorization.

311200355412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530008 (or 10530003 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 311200355412 its reverse (214553002113), we get a palindrome (525753357525).

The spelling of 311200355412 in words is "three hundred eleven billion, two hundred million, three hundred fifty-five thousand, four hundred twelve".