20033042311 has 4 divisors (see below), whose sum is σ = 20216831800. Its totient is φ = 19849252824.

The previous prime is 20033042303. The next prime is 20033042333. The reversal of 20033042311 is 11324033002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20033042311 - 2³ = 20033042303 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 (20033048311) 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, 91894581 + ... + 91894798.

It is an arithmetic number, because the mean of its divisors is an integer number (5054207950).

Almost surely, 2^20033042311 is an apocalyptic number.

20033042311 is a deficient number, since it is larger than the sum of its proper divisors (183789489).

20033042311 is a wasteful number, since it uses less digits than its factorization.

20033042311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183789488.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20033042311 its reverse (11324033002), we get a palindrome (31357075313).

The spelling of 20033042311 in words is "twenty billion, thirty-three million, forty-two thousand, three hundred eleven".