20323111001 has 4 divisors (see below), whose sum is σ = 20357040000. Its totient is φ = 20289182004.

The previous prime is 20323110991. The next prime is 20323111009. The reversal of 20323111001 is 10011132302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10011132302 = 2 ⋅5005566151.

It is a cyclic number.

It is not a de Polignac number, because 20323111001 - 2¹⁸ = 20322848857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20323111009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16963601 + ... + 16964798.

It is an arithmetic number, because the mean of its divisors is an integer number (5089260000).

Almost surely, 2^20323111001 is an apocalyptic number.

It is an amenable number.

20323111001 is a deficient number, since it is larger than the sum of its proper divisors (33928999).

20323111001 is an equidigital number, since it uses as much as digits as its factorization.

20323111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33928998.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20323111001 its reverse (10011132302), we get a palindrome (30334243303).

The spelling of 20323111001 in words is "twenty billion, three hundred twenty-three million, one hundred eleven thousand, one".