20003213311 has 4 divisors (see below), whose sum is σ = 20003542272. Its totient is φ = 20002884352.

The previous prime is 20003213309. The next prime is 20003213323. The reversal of 20003213311 is 11331230002.

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 20003213311 - 2¹ = 20003213309 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 (20003213381) 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, 43711 + ... + 204736.

It is an arithmetic number, because the mean of its divisors is an integer number (5000885568).

Almost surely, 2^20003213311 is an apocalyptic number.

20003213311 is a deficient number, since it is larger than the sum of its proper divisors (328961).

20003213311 is an equidigital number, since it uses as much as digits as its factorization.

20003213311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328960.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20003213311 its reverse (11331230002), we get a palindrome (31334443313).

The spelling of 20003213311 in words is "twenty billion, three million, two hundred thirteen thousand, three hundred eleven".