10311111212 has 18 divisors (see below), whose sum is σ = 18473855148. Its totient is φ = 5035655352.

The previous prime is 10311111203. The next prime is 10311111229. The reversal of 10311111212 is 21211111301.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 689678 + ... + 704469.

It is an arithmetic number, because the mean of its divisors is an integer number (1026325286).

Almost surely, 2^10311111212 is an apocalyptic number.

It is an amenable number.

10311111212 is a deficient number, since it is larger than the sum of its proper divisors (8162743936).

10311111212 is a wasteful number, since it uses less digits than its factorization.

10311111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394237 (or 1394192 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 10311111212 its reverse (21211111301), we get a palindrome (31522222513).

The spelling of 10311111212 in words is "ten billion, three hundred eleven million, one hundred eleven thousand, two hundred twelve".