21313233231312 has 80 divisors (see below), whose sum is σ = 61687933094592. Its totient is φ = 6283999964160.

The previous prime is 21313233231299. The next prime is 21313233231343.

21313233231312 is nontrivially palindromic in base 10.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21313233231312.

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 15 ways as a sum of consecutive naturals, for example, 545466573 + ... + 545505644.

Almost surely, 2^{21313233231312} is an apocalyptic number.

21313233231312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21313233231312 is an abundant number, since it is smaller than the sum of its proper divisors (40374699863280).

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

21313233231312 is a wasteful number, since it uses less digits than its factorization.

21313233231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090972276 (or 1090972270 counting only the distinct ones).

The product of its digits is 11664, while the sum is 30.

It can be divided in two parts, 2131323 and 3231312, that added together give a palindrome (5362635).

The spelling of 21313233231312 in words is "twenty-one trillion, three hundred thirteen billion, two hundred thirty-three million, two hundred thirty-one thousand, three hundred twelve".