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20020231030 = 2519105369637
BaseRepresentation
bin10010101001010011…
…000111101101110110
31220200020121010000011
4102221103013231312
5312000134343110
613110331010434
71306056104332
oct225123075566
956606533004
1020020231030
118543997988
123a68899a1a
131b7093c267
14d7cc707c2
157c291548a
hex4a94c7b76

20020231030 has 16 divisors (see below), whose sum is σ = 37933069680. Its totient is φ = 7586613792.

The previous prime is 20020230943. The next prime is 20020231037. The reversal of 20020231030 is 3013202002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20020231030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020231037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52684629 + ... + 52685008.

It is an arithmetic number, because the mean of its divisors is an integer number (2370816855).

Almost surely, 220020231030 is an apocalyptic number.

20020231030 is a deficient number, since it is larger than the sum of its proper divisors (17912838650).

20020231030 is a wasteful number, since it uses less digits than its factorization.

20020231030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105369663.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20020231030 its reverse (3013202002), we get a palindrome (23033433032).

The spelling of 20020231030 in words is "twenty billion, twenty million, two hundred thirty-one thousand, thirty".

Divisors: 1 2 5 10 19 38 95 190 105369637 210739274 526848185 1053696370 2002023103 4004046206 10010115515 20020231030