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22020130031 = 94151233881
BaseRepresentation
bin10100100000100000…
…001000010011101111
32002211121202111200112
4110200200020103233
5330044123130111
614041011450235
71406452005554
oct244040102357
962747674615
1022020130031
11937a875679
1243265b697b
1320cc07c653
1410cc700a2b
1588d2a7e8b
hex5208084ef

22020130031 has 4 divisors (see below), whose sum is σ = 22020458064. Its totient is φ = 22019802000.

The previous prime is 22020130007. The next prime is 22020130081. The reversal of 22020130031 is 13003102022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22020130031 - 210 = 22020129007 is a prime.

It is a super-2 number, since 2×220201300312 (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 = 22020129988 and 22020130015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020130081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22790 + ... + 211091.

It is an arithmetic number, because the mean of its divisors is an integer number (5505114516).

Almost surely, 222020130031 is an apocalyptic number.

22020130031 is a deficient number, since it is larger than the sum of its proper divisors (328033).

22020130031 is an equidigital number, since it uses as much as digits as its factorization.

22020130031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328032.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 22020130031 its reverse (13003102022), we get a palindrome (35023232053).

The spelling of 22020130031 in words is "twenty-two billion, twenty million, one hundred thirty thousand, thirty-one".

Divisors: 1 94151 233881 22020130031