21034144323 has 6 divisors (see below), whose sum is σ = 30382652924. Its totient is φ = 14022762876.

The previous prime is 21034144301. The next prime is 21034144331. The reversal of 21034144323 is 32344143012.

21034144323 is a `hidden beast` number, since 210 + 3 + 4 + 1 + 443 + 2 + 3 = 666.

It is not a de Polignac number, because 21034144323 - 2¹² = 21034140227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21034144333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1168563565 + ... + 1168563582.

Almost surely, 2^21034144323 is an apocalyptic number.

21034144323 is a deficient number, since it is larger than the sum of its proper divisors (9348508601).

21034144323 is a wasteful number, since it uses less digits than its factorization.

21034144323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337127153 (or 2337127150 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21034144323 its reverse (32344143012), we get a palindrome (53378287335).

The spelling of 21034144323 in words is "twenty-one billion, thirty-four million, one hundred forty-four thousand, three hundred twenty-three".