311345552136 has 64 divisors (see below), whose sum is σ = 783756000000. Its totient is φ = 103063202816.

The previous prime is 311345552093. The next prime is 311345552137. The reversal of 311345552136 is 631255543113.

It is a junction number, because it is equal to n+sod(n) for n = 311345552094 and 311345552103.

It is not an unprimeable number, because it can be changed into a prime (311345552137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31639105 + ... + 31648943.

It is an arithmetic number, because the mean of its divisors is an integer number (12246187500).

Almost surely, 2^311345552136 is an apocalyptic number.

It is an amenable number.

311345552136 is an abundant number, since it is smaller than the sum of its proper divisors (472410447864).

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

311345552136 is a wasteful number, since it uses less digits than its factorization.

311345552136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18846 (or 18842 counting only the distinct ones).

The product of its digits is 162000, while the sum is 39.

The spelling of 311345552136 in words is "three hundred eleven billion, three hundred forty-five million, five hundred fifty-two thousand, one hundred thirty-six".