231333101212 has 12 divisors (see below), whose sum is σ = 405071216200. Its totient is φ = 115598468016.

The previous prime is 231333101191. The next prime is 231333101257. The reversal of 231333101212 is 212101333132.

It is a super-2 number, since 2×231333101212² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17013003 + ... + 17026594.

Almost surely, 2^231333101212 is an apocalyptic number.

It is an amenable number.

231333101212 is a deficient number, since it is larger than the sum of its proper divisors (173738114988).

231333101212 is a wasteful number, since it uses less digits than its factorization.

231333101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34041300 (or 34041298 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231333101212 its reverse (212101333132), we get a palindrome (443434434344).

The spelling of 231333101212 in words is "two hundred thirty-one billion, three hundred thirty-three million, one hundred one thousand, two hundred twelve".