21313323231332 has 12 divisors (see below), whose sum is σ = 40689071623536. Its totient is φ = 9687874196040.

The previous prime is 21313323231311. The next prime is 21313323231367. The reversal of 21313323231332 is 23313232331312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242196854858 + ... + 242196854945.

It is an arithmetic number, because the mean of its divisors is an integer number (3390755968628).

Almost surely, 2^{21313323231332} is an apocalyptic number.

21313323231332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21313323231332 is a deficient number, since it is larger than the sum of its proper divisors (19375748392204).

21313323231332 is a wasteful number, since it uses less digits than its factorization.

21313323231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484393709818 (or 484393709816 counting only the distinct ones).

The product of its digits is 34992, while the sum is 32.

Adding to 21313323231332 its reverse (23313232331312), we get a palindrome (44626555562644).

The spelling of 21313323231332 in words is "twenty-one trillion, three hundred thirteen billion, three hundred twenty-three million, two hundred thirty-one thousand, three hundred thirty-two".