20233311311 has 8 divisors (see below), whose sum is σ = 21426735600. Its totient is φ = 19040245888.

The previous prime is 20233311253. The next prime is 20233311367. The reversal of 20233311311 is 11311333202.

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

It is a de Polignac number, because none of the positive numbers 2^k-20233311311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233311011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31025 + ... + 203541.

It is an arithmetic number, because the mean of its divisors is an integer number (2678341950).

Almost surely, 2^20233311311 is an apocalyptic number.

20233311311 is a deficient number, since it is larger than the sum of its proper divisors (1193424289).

20233311311 is a wasteful number, since it uses less digits than its factorization.

20233311311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179433.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20233311311 its reverse (11311333202), we get a palindrome (31544644513).

The spelling of 20233311311 in words is "twenty billion, two hundred thirty-three million, three hundred eleven thousand, three hundred eleven".