10311231212 has 24 divisors (see below), whose sum is σ = 18090240336. Its totient is φ = 5142610368.

The previous prime is 10311231199. The next prime is 10311231233. The reversal of 10311231212 is 21213211301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3625463 + ... + 3628305.

It is an arithmetic number, because the mean of its divisors is an integer number (753760014).

Almost surely, 2^10311231212 is an apocalyptic number.

It is an amenable number.

10311231212 is a deficient number, since it is larger than the sum of its proper divisors (7779009124).

10311231212 is a wasteful number, since it uses less digits than its factorization.

10311231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4817 (or 4815 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10311231212 its reverse (21213211301), we get a palindrome (31524442513).

The spelling of 10311231212 in words is "ten billion, three hundred eleven million, two hundred thirty-one thousand, two hundred twelve".