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22020100031 = 199490922541
BaseRepresentation
bin10100100000100000…
…000000111110111111
32002211121200222112102
4110200200000332333
5330044121200111
614041011055315
71406451522236
oct244040007677
962747628472
1022020100031
11937a855086
1243265a153b
1320cc06bab7
1410cc6d3b1d
1588d29e13b
hex520800fbf

22020100031 has 8 divisors (see below), whose sum is σ = 22136244000. Its totient is φ = 21904011360.

The previous prime is 22020100013. The next prime is 22020100033. The reversal of 22020100031 is 13000102022.

It is a happy number.

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 22020100031 - 226 = 21952991167 is a prime.

It is a super-2 number, since 2×220201000312 (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 = 22020099985 and 22020100021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020100033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965621 + ... + 988161.

It is an arithmetic number, because the mean of its divisors is an integer number (2767030500).

Almost surely, 222020100031 is an apocalyptic number.

22020100031 is a deficient number, since it is larger than the sum of its proper divisors (116143969).

22020100031 is a wasteful number, since it uses less digits than its factorization.

22020100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27649.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 22020100031 its reverse (13000102022), we get a palindrome (35020202053).

The spelling of 22020100031 in words is "twenty-two billion, twenty million, one hundred thousand, thirty-one".

Divisors: 1 199 4909 22541 976891 4485659 110653769 22020100031