21232223032031 has 16 divisors (see below), whose sum is σ = 23168720418048. Its totient is φ = 19296775713600.

The previous prime is 21232223031991. The next prime is 21232223032039. The reversal of 21232223032031 is 13023032223212.

It is not a de Polignac number, because 21232223032031 - 2¹⁰ = 21232223031007 is a prime.

It is a super-2 number, since 2×21232223032031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232223032039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874425611 + ... + 874449891.

It is an arithmetic number, because the mean of its divisors is an integer number (1448045026128).

Almost surely, 2^{21232223032031} is an apocalyptic number.

21232223032031 is a deficient number, since it is larger than the sum of its proper divisors (1936497386017).

21232223032031 is a wasteful number, since it uses less digits than its factorization.

21232223032031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42622.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21232223032031 its reverse (13023032223212), we get a palindrome (34255255255243).

The spelling of 21232223032031 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred twenty-three million, thirty-two thousand, thirty-one".