20323311011 has 8 divisors (see below), whose sum is σ = 21544042464. Its totient is φ = 19105384320.

The previous prime is 20323310999. The next prime is 20323311119. The reversal of 20323311011 is 11011332302.

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 20323311011 - 2³⁰ = 19249569187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20323311511) 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, 686255 + ... + 715256.

It is an arithmetic number, because the mean of its divisors is an integer number (2693005308).

Almost surely, 2^20323311011 is an apocalyptic number.

20323311011 is a deficient number, since it is larger than the sum of its proper divisors (1220731453).

20323311011 is a wasteful number, since it uses less digits than its factorization.

20323311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402381.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20323311011 its reverse (11011332302), we get a palindrome (31334643313).

The spelling of 20323311011 in words is "twenty billion, three hundred twenty-three million, three hundred eleven thousand, eleven".