21331023231003 has 32 divisors (see below), whose sum is σ = 29446973487360. Its totient is φ = 13718710696320.

The previous prime is 21331023230983. The next prime is 21331023231041. The reversal of 21331023231003 is 30013232013312.

It is not a de Polignac number, because 21331023231003 - 2²² = 21331019036699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21331023231043) 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, 725851276 + ... + 725880662.

It is an arithmetic number, because the mean of its divisors is an integer number (920217921480).

Almost surely, 2^{21331023231003} is an apocalyptic number.

21331023231003 is a deficient number, since it is larger than the sum of its proper divisors (8115950256357).

21331023231003 is a wasteful number, since it uses less digits than its factorization.

21331023231003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36187.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21331023231003 its reverse (30013232013312), we get a palindrome (51344255244315).

The spelling of 21331023231003 in words is "twenty-one trillion, three hundred thirty-one billion, twenty-three million, two hundred thirty-one thousand, three".