21023113323 has 8 divisors (see below), whose sum is σ = 28035528336. Its totient is φ = 14013053600.

The previous prime is 21023113313. The next prime is 21023113333. The reversal of 21023113323 is 32331132012.

It is an interprime number because it is at equal distance from previous prime (21023113313) and next prime (21023113333).

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

It is a cyclic number.

It is not a de Polignac number, because 21023113323 - 2³² = 16728146027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21023113323.

It is not an unprimeable number, because it can be changed into a prime (21023113313) 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, 567888 + ... + 603773.

It is an arithmetic number, because the mean of its divisors is an integer number (3504441042).

Almost surely, 2^21023113323 is an apocalyptic number.

21023113323 is a deficient number, since it is larger than the sum of its proper divisors (7012415013).

21023113323 is a wasteful number, since it uses less digits than its factorization.

21023113323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177645.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21023113323 its reverse (32331132012), we get a palindrome (53354245335).

The spelling of 21023113323 in words is "twenty-one billion, twenty-three million, one hundred thirteen thousand, three hundred twenty-three".