20011300113231 has 128 divisors (see below), whose sum is σ = 36570326016000. Its totient is φ = 10561467958272.

The previous prime is 20011300113127. The next prime is 20011300113241. The reversal of 20011300113231 is 13231100311002.

20011300113231 is a `hidden beast` number, since 20 + 0 + 1 + 1 + 300 + 113 + 231 = 666.

It is not a de Polignac number, because 20011300113231 - 2¹⁸ = 20011299851087 is a prime.

It is a super-2 number, since 2×20011300113231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011300113241) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 22909180 + ... + 23766638.

It is an arithmetic number, because the mean of its divisors is an integer number (285705672000).

Almost surely, 2^{20011300113231} is an apocalyptic number.

20011300113231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20011300113231 is a deficient number, since it is larger than the sum of its proper divisors (16559025902769).

20011300113231 is a wasteful number, since it uses less digits than its factorization.

20011300113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857658 (or 857652 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 20011300113231 its reverse (13231100311002), we get a palindrome (33242400424233).

The spelling of 20011300113231 in words is "twenty trillion, eleven billion, three hundred million, one hundred thirteen thousand, two hundred thirty-one".