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4020244030031 = 172353931906537
BaseRepresentation
bin111010100000001001001…
…101111010001001001111
3112020022221201101222110012
4322200021031322021033
51011331424432430111
612314512525503435
7563311252265615
oct72401115721117
915208851358405
104020244030031
11130aa80a46aa9
1254b197711b7b
13232151c05628
14dc81bbc96b5
156e89837b48b
hex3a80937a24f

4020244030031 has 16 divisors (see below), whose sum is σ = 4442630099904. Its totient is φ = 3618574823424.

The previous prime is 4020244030009. The next prime is 4020244030051. The reversal of 4020244030031 is 1300304420204.

It is a cyclic number.

It is not a de Polignac number, because 4020244030031 - 238 = 3745366123087 is a prime.

It is a super-4 number, since 4×40202440300314 (a number of 52 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4020244029979 and 4020244030006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020244030051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1155395 + ... + 3061931.

It is an arithmetic number, because the mean of its divisors is an integer number (277664381244).

Almost surely, 24020244030031 is an apocalyptic number.

4020244030031 is a deficient number, since it is larger than the sum of its proper divisors (422386069873).

4020244030031 is a wasteful number, since it uses less digits than its factorization.

4020244030031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911970.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 4020244030031 its reverse (1300304420204), we get a palindrome (5320548450235).

The spelling of 4020244030031 in words is "four trillion, twenty billion, two hundred forty-four million, thirty thousand, thirty-one".

Divisors: 1 17 23 391 5393 91681 124039 1906537 2108663 32411129 43850351 745455967 10281954041 174793218697 236484942943 4020244030031