311312213032 has 16 divisors (see below), whose sum is σ = 584506741140. Its totient is φ = 155443748736.

The previous prime is 311312213027. The next prime is 311312213117. The reversal of 311312213032 is 230312213113.

It can be written as a sum of positive squares in 2 ways, for example, as 309885942276 + 1426270756 = 556674^2 + 37766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311312212994 and 311312213012.

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, 26538493 + ... + 26550220.

Almost surely, 2^311312213032 is an apocalyptic number.

It is an amenable number.

311312213032 is a deficient number, since it is larger than the sum of its proper divisors (273194528108).

311312213032 is a wasteful number, since it uses less digits than its factorization.

311312213032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53089452 (or 53089448 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 311312213032 its reverse (230312213113), we get a palindrome (541624426145).

The spelling of 311312213032 in words is "three hundred eleven billion, three hundred twelve million, two hundred thirteen thousand, thirty-two".