20013031032111 has 12 divisors (see below), whose sum is σ = 31131381605688. Its totient is φ = 12315711404304.

The previous prime is 20013031032103. The next prime is 20013031032119. The reversal of 20013031032111 is 11123013031002.

20013031032111 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 30 + 310 + 321 + 1 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (20013031032103) and next prime (20013031032119).

It is not a de Polignac number, because 20013031032111 - 2³ = 20013031032103 is a prime.

It is a super-2 number, since 2×20013031032111² (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 (20013031032119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85525773525 + ... + 85525773758.

It is an arithmetic number, because the mean of its divisors is an integer number (2594281800474).

Almost surely, 2^{20013031032111} is an apocalyptic number.

20013031032111 is a deficient number, since it is larger than the sum of its proper divisors (11118350573577).

20013031032111 is a wasteful number, since it uses less digits than its factorization.

20013031032111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171051547302 (or 171051547299 counting only the distinct ones).

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

Adding to 20013031032111 its reverse (11123013031002), we get a palindrome (31136044063113).

The spelling of 20013031032111 in words is "twenty trillion, thirteen billion, thirty-one million, thirty-two thousand, one hundred eleven".