311305452320 has 48 divisors (see below), whose sum is σ = 743041221048. Its totient is φ = 123238440960.

The previous prime is 311305452317. The next prime is 311305452343. The reversal of 311305452320 is 23254503113.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 187291603984 + 124013848336 = 432772^2 + 352156^2 .

It is a super-2 number, since 2×311305452320² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10013651 + ... + 10044690.

Almost surely, 2^311305452320 is an apocalyptic number.

It is an amenable number.

311305452320 is an abundant number, since it is smaller than the sum of its proper divisors (431735768728).

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

311305452320 is a wasteful number, since it uses less digits than its factorization.

311305452320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20058453 (or 20058445 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 311305452320 its reverse (23254503113), we get a palindrome (334559955433).

The spelling of 311305452320 in words is "three hundred eleven billion, three hundred five million, four hundred fifty-two thousand, three hundred twenty".