20131111031022 has 12 divisors (see below), whose sum is σ = 43617407233920. Its totient is φ = 6710370343668.

The previous prime is 20131111030981. The next prime is 20131111031027. The reversal of 20131111031022 is 22013011113102.

20131111031022 is a `hidden beast` number, since 20 + 1 + 311 + 1 + 1 + 0 + 310 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1118395057279 = 20131111031022 / (2 + 0 + 1 + 3 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20131111030986 and 20131111031004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131111031027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 559197528622 + ... + 559197528657.

It is an arithmetic number, because the mean of its divisors is an integer number (3634783936160).

Almost surely, 2^{20131111031022} is an apocalyptic number.

20131111031022 is an abundant number, since it is smaller than the sum of its proper divisors (23486296202898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20131111031022 is a wasteful number, since it uses less digits than its factorization.

20131111031022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118395057287 (or 1118395057284 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 20131111031022 its reverse (22013011113102), we get a palindrome (42144122144124).

The spelling of 20131111031022 in words is "twenty trillion, one hundred thirty-one billion, one hundred eleven million, thirty-one thousand, twenty-two".