20011002323 has 8 divisors (see below), whose sum is σ = 21588595728. Its totient is φ = 18438878304.

The previous prime is 20011002299. The next prime is 20011002383. The reversal of 20011002323 is 32320011002.

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 20011002323 - 2¹⁸ = 20010740179 is a prime.

It is a super-2 number, since 2×20011002323² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011002298 and 20011002307.

It is not an unprimeable number, because it can be changed into a prime (20011002383) 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, 1359740 + ... + 1374377.

It is an arithmetic number, because the mean of its divisors is an integer number (2698574466).

Almost surely, 2^20011002323 is an apocalyptic number.

20011002323 is a deficient number, since it is larger than the sum of its proper divisors (1577593405).

20011002323 is a wasteful number, since it uses less digits than its factorization.

20011002323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734693.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20011002323 its reverse (32320011002), we get a palindrome (52331013325).

It can be divided in two parts, 20011002 and 323, that multiplied together give a palindrome (6463553646).

The spelling of 20011002323 in words is "twenty billion, eleven million, two thousand, three hundred twenty-three".