20020002311 has 8 divisors (see below), whose sum is σ = 20324275824. Its totient is φ = 19716540480.

The previous prime is 20020002293. The next prime is 20020002313. The reversal of 20020002311 is 11320002002.

It is a happy number.

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 20020002311 - 2²⁶ = 19952893447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020002292 and 20020002301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020002313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153125 + ... + 251966.

It is an arithmetic number, because the mean of its divisors is an integer number (2540534478).

Almost surely, 2^20020002311 is an apocalyptic number.

20020002311 is a deficient number, since it is larger than the sum of its proper divisors (304273513).

20020002311 is an equidigital number, since it uses as much as digits as its factorization.

20020002311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405841.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20020002311 its reverse (11320002002), we get a palindrome (31340004313).

The spelling of 20020002311 in words is "twenty billion, twenty million, two thousand, three hundred eleven".