311212311100 has 18 divisors (see below), whose sum is σ = 675330715304. Its totient is φ = 124484924400.

The previous prime is 311212311071. The next prime is 311212311131. The reversal of 311212311100 is 1113212113.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1556061456 + ... + 1556061655.

Almost surely, 2^311212311100 is an apocalyptic number.

It is an amenable number.

311212311100 is an abundant number, since it is smaller than the sum of its proper divisors (364118404204).

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

311212311100 is a wasteful number, since it uses less digits than its factorization.

311212311100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112123125 (or 3112123118 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 311212311100 its reverse (1113212113), we get a palindrome (312325523213).

The spelling of 311212311100 in words is "three hundred eleven billion, two hundred twelve million, three hundred eleven thousand, one hundred".