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20020322031 = 335171897481
BaseRepresentation
bin10010101001010011…
…011101111011101111
31220200020202201211120
4102221103131323233
5312000200301111
613110332552023
71306056633543
oct225123357357
956606681746
1020020322031
118543a4a296
123a68922613
131b709717c8
14d7cc95a23
157c2932406
hex4a94ddeef

20020322031 has 8 divisors (see below), whose sum is σ = 26701366704. Its totient is φ = 13343079360.

The previous prime is 20020322027. The next prime is 20020322083. The reversal of 20020322031 is 13022302002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20020322031 - 22 = 20020322027 is a prime.

It is a super-2 number, since 2×200203220312 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20020322031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020329031) 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, 938190 + ... + 959291.

It is an arithmetic number, because the mean of its divisors is an integer number (3337670838).

Almost surely, 220020322031 is an apocalyptic number.

20020322031 is a deficient number, since it is larger than the sum of its proper divisors (6681044673).

20020322031 is a wasteful number, since it uses less digits than its factorization.

20020322031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901001.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20020322031 its reverse (13022302002), we get a palindrome (33042624033).

The spelling of 20020322031 in words is "twenty billion, twenty million, three hundred twenty-two thousand, thirty-one".

Divisors: 1 3 3517 10551 1897481 5692443 6673440677 20020322031