21441031323 has 8 divisors (see below), whose sum is σ = 28589590608. Its totient is φ = 14293246464.

The previous prime is 21441031309. The next prime is 21441031343. The reversal of 21441031323 is 32313014412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21441031323 - 2⁴ = 21441031307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21441031293 and 21441031302.

It is not an unprimeable number, because it can be changed into a prime (21441031343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125590 + ... + 242187.

It is an arithmetic number, because the mean of its divisors is an integer number (3573698826).

Almost surely, 2^21441031323 is an apocalyptic number.

21441031323 is a deficient number, since it is larger than the sum of its proper divisors (7148559285).

21441031323 is a wasteful number, since it uses less digits than its factorization.

21441031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387213.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21441031323 its reverse (32313014412), we get a palindrome (53754045735).

The spelling of 21441031323 in words is "twenty-one billion, four hundred forty-one million, thirty-one thousand, three hundred twenty-three".