21030001323 has 8 divisors (see below), whose sum is σ = 28041397248. Its totient is φ = 14019303144.

The previous prime is 21030001303. The next prime is 21030001327. The reversal of 21030001323 is 32310003012.

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

It is not a de Polignac number, because 21030001323 - 2⁹ = 21030000811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21030001327) 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, 99511 + ... + 227952.

It is an arithmetic number, because the mean of its divisors is an integer number (3505174656).

Almost surely, 2^21030001323 is an apocalyptic number.

21030001323 is a deficient number, since it is larger than the sum of its proper divisors (7011395925).

21030001323 is a wasteful number, since it uses less digits than its factorization.

21030001323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348873.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21030001323 its reverse (32310003012), we get a palindrome (53340004335).

The spelling of 21030001323 in words is "twenty-one billion, thirty million, one thousand, three hundred twenty-three".