1231213332312 has 48 divisors (see below), whose sum is σ = 3335152733640. Its totient is φ = 410328551808.

The previous prime is 1231213332289. The next prime is 1231213332337. The reversal of 1231213332312 is 2132333121321.

1231213332312 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 2 + 13 + 332 + 312 = 666.

It is a nude number because it is divisible by every one of its digits.

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 11 ways as a sum of consecutive naturals, for example, 1188358 + ... + 1968405.

Almost surely, 2^{1231213332312} is an apocalyptic number.

1231213332312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231213332312 is an abundant number, since it is smaller than the sum of its proper divisors (2103939401328).

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

1231213332312 is a wasteful number, since it uses less digits than its factorization.

1231213332312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162192 (or 3162185 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1231213332312 its reverse (2132333121321), we get a palindrome (3363546453633).

The spelling of 1231213332312 in words is "one trillion, two hundred thirty-one billion, two hundred thirteen million, three hundred thirty-two thousand, three hundred twelve".