21232131232323 has 32 divisors (see below), whose sum is σ = 33827330626560. Its totient is φ = 11693398223360.

The previous prime is 21232131232321. The next prime is 21232131232327. The reversal of 21232131232323 is 32323213123212.

It is a cyclic number.

It is not a de Polignac number, because 21232131232323 - 2¹ = 21232131232321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21232131232321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 652517115 + ... + 652549652.

It is an arithmetic number, because the mean of its divisors is an integer number (1057104082080).

Almost surely, 2^{21232131232323} is an apocalyptic number.

21232131232323 is a deficient number, since it is larger than the sum of its proper divisors (12595199394237).

21232131232323 is a wasteful number, since it uses less digits than its factorization.

21232131232323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305066827.

The product of its digits is 15552, while the sum is 30.

Adding to 21232131232323 its reverse (32323213123212), we get a palindrome (53555344355535).

The spelling of 21232131232323 in words is "twenty-one trillion, two hundred thirty-two billion, one hundred thirty-one million, two hundred thirty-two thousand, three hundred twenty-three".