20013023323 has 8 divisors (see below), whose sum is σ = 21100385600. Its totient is φ = 18929065608.

The previous prime is 20013023309. The next prime is 20013023333. The reversal of 20013023323 is 32332031002.

It is a happy number.

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 20013023323 - 2²¹ = 20010926171 is a prime.

It is a super-2 number, since 2×20013023323² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20013023323.

It is not an unprimeable number, because it can be changed into a prime (20013023333) 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, 839061 + ... + 862582.

It is an arithmetic number, because the mean of its divisors is an integer number (2637548200).

Almost surely, 2^20013023323 is an apocalyptic number.

20013023323 is a deficient number, since it is larger than the sum of its proper divisors (1087362277).

20013023323 is a wasteful number, since it uses less digits than its factorization.

20013023323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702281.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20013023323 its reverse (32332031002), we get a palindrome (52345054325).

The spelling of 20013023323 in words is "twenty billion, thirteen million, twenty-three thousand, three hundred twenty-three".