20013011311 has 8 divisors (see below), whose sum is σ = 20475944640. Its totient is φ = 19553238432.

The previous prime is 20013011309. The next prime is 20013011401. The reversal of 20013011311 is 11311031002.

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 20013011311 - 2¹ = 20013011309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20013011291 and 20013011300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013011111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 777300 + ... + 802633.

It is an arithmetic number, because the mean of its divisors is an integer number (2559493080).

Almost surely, 2^20013011311 is an apocalyptic number.

20013011311 is a deficient number, since it is larger than the sum of its proper divisors (462933329).

20013011311 is a wasteful number, since it uses less digits than its factorization.

20013011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580225.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 20013011311 its reverse (11311031002), we get a palindrome (31324042313).

The spelling of 20013011311 in words is "twenty billion, thirteen million, eleven thousand, three hundred eleven".