20012020231311 has 16 divisors (see below), whose sum is σ = 29647854526720. Its totient is φ = 13341159104760.

The previous prime is 20012020231223. The next prime is 20012020231363. The reversal of 20012020231311 is 11313202021002.

20012020231311 is a `hidden beast` number, since 2 + 0 + 0 + 120 + 2 + 0 + 231 + 311 = 666.

It is not a de Polignac number, because 20012020231311 - 2¹⁷ = 20012020100239 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 (20012020231111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3246355 + ... + 7110756.

It is an arithmetic number, because the mean of its divisors is an integer number (1852990907920).

Almost surely, 2^{20012020231311} is an apocalyptic number.

20012020231311 is a deficient number, since it is larger than the sum of its proper divisors (9635834295409).

20012020231311 is a wasteful number, since it uses less digits than its factorization.

20012020231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10428683 (or 10428677 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20012020231311 its reverse (11313202021002), we get a palindrome (31325222252313).

The spelling of 20012020231311 in words is "twenty trillion, twelve billion, twenty million, two hundred thirty-one thousand, three hundred eleven".