311335211212 has 48 divisors (see below), whose sum is σ = 579040215040. Its totient is φ = 146057167872.

The previous prime is 311335211189. The next prime is 311335211279. The reversal of 311335211212 is 212112533113.

It is a super-2 number, since 2×311335211212² (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 15 ways as a sum of consecutive naturals, for example, 5541253 + ... + 5597155.

Almost surely, 2^311335211212 is an apocalyptic number.

It is an amenable number.

311335211212 is a deficient number, since it is larger than the sum of its proper divisors (267705003828).

311335211212 is a wasteful number, since it uses less digits than its factorization.

311335211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56630 (or 56628 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

Adding to 311335211212 its reverse (212112533113), we get a palindrome (523447744325).

The spelling of 311335211212 in words is "three hundred eleven billion, three hundred thirty-five million, two hundred eleven thousand, two hundred twelve".