20233403311 has 4 divisors (see below), whose sum is σ = 22072803624. Its totient is φ = 18394003000.

The previous prime is 20233403303. The next prime is 20233403341. The reversal of 20233403311 is 11330433202.

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 20233403311 - 2³ = 20233403303 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 (20233403341) 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, 919700140 + ... + 919700161.

It is an arithmetic number, because the mean of its divisors is an integer number (5518200906).

Almost surely, 2^20233403311 is an apocalyptic number.

20233403311 is a deficient number, since it is larger than the sum of its proper divisors (1839400313).

20233403311 is a wasteful number, since it uses less digits than its factorization.

20233403311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839400312.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20233403311 its reverse (11330433202), we get a palindrome (31563836513).

The spelling of 20233403311 in words is "twenty billion, two hundred thirty-three million, four hundred three thousand, three hundred eleven".