311411161256 has 16 divisors (see below), whose sum is σ = 628810998900. Its totient is φ = 143728228224.

The previous prime is 311411161231. The next prime is 311411161289. The reversal of 311411161256 is 652161114113.

It can be written as a sum of positive squares in 2 ways, for example, as 310482984100 + 928177156 = 557210^2 + 30466^2 .

It is a super-2 number, since 2×311411161256² (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 3 ways as a sum of consecutive naturals, for example, 1497168941 + ... + 1497169148.

Almost surely, 2^311411161256 is an apocalyptic number.

It is an amenable number.

311411161256 is an abundant number, since it is smaller than the sum of its proper divisors (317399837644).

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

311411161256 is a wasteful number, since it uses less digits than its factorization.

311411161256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994338108 (or 2994338104 counting only the distinct ones).

The product of its digits is 4320, while the sum is 32.

Adding to 311411161256 its reverse (652161114113), we get a palindrome (963572275369).

The spelling of 311411161256 in words is "three hundred eleven billion, four hundred eleven million, one hundred sixty-one thousand, two hundred fifty-six".