21031332023230 has 32 divisors (see below), whose sum is σ = 38230534794240. Its totient is φ = 8329474920480.

The previous prime is 21031332023209. The next prime is 21031332023371. The reversal of 21031332023230 is 3232023313012.

It is a junction number, because it is equal to n+sod(n) for n = 21031332023195 and 21031332023204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3219766 + ... + 7240825.

It is an arithmetic number, because the mean of its divisors is an integer number (1194704212320).

Almost surely, 2^{21031332023230} is an apocalyptic number.

21031332023230 is a deficient number, since it is larger than the sum of its proper divisors (17199202771010).

21031332023230 is a wasteful number, since it uses less digits than its factorization.

21031332023230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10462584.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21031332023230 its reverse (3232023313012), we get a palindrome (24263355336242).

The spelling of 21031332023230 in words is "twenty-one trillion, thirty-one billion, three hundred thirty-two million, twenty-three thousand, two hundred thirty".