311212111124 has 72 divisors (see below), whose sum is σ = 609515884320. Its totient is φ = 138625344000.

The previous prime is 311212111123. The next prime is 311212111159. The reversal of 311212111124 is 421111212113.

It is a happy number.

It is a super-2 number, since 2×311212111124² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311212111096 and 311212111105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311212111123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28569719 + ... + 28580609.

Almost surely, 2^311212111124 is an apocalyptic number.

311212111124 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

311212111124 is a deficient number, since it is larger than the sum of its proper divisors (298303773196).

311212111124 is a wasteful number, since it uses less digits than its factorization.

311212111124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12249 (or 12230 counting only the distinct ones).

The product of its digits is 96, while the sum is 20.

Adding to 311212111124 its reverse (421111212113), we get a palindrome (732323323237).

The spelling of 311212111124 in words is "three hundred eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred twenty-four".