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20033110031 = 1115791115331
BaseRepresentation
bin10010101010000100…
…010000000000001111
31220201010211102200012
4102222010100000033
5312011434010111
613111511023435
71306303424414
oct225204200017
956633742605
1020033110031
118550194090
123a7106ab7b
131b734cb37c
14d8086410b
157c3b0b48b
hex4aa11000f

20033110031 has 8 divisors (see below), whose sum is σ = 21855875328. Its totient is φ = 18210607000.

The previous prime is 20033109973. The next prime is 20033110043. The reversal of 20033110031 is 13001133002.

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 20033110031 - 210 = 20033109007 is a prime.

It is a super-2 number, since 2×200331100312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20033109988 and 20033110015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033110051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116036 + ... + 231366.

It is an arithmetic number, because the mean of its divisors is an integer number (2731984416).

Almost surely, 220033110031 is an apocalyptic number.

20033110031 is a deficient number, since it is larger than the sum of its proper divisors (1822765297).

20033110031 is a wasteful number, since it uses less digits than its factorization.

20033110031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131133.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 20033110031 its reverse (13001133002), we get a palindrome (33034243033).

The spelling of 20033110031 in words is "twenty billion, thirty-three million, one hundred ten thousand, thirty-one".

Divisors: 1 11 15791 115331 173701 1268641 1821191821 20033110031