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20020331230 = 258324120881
BaseRepresentation
bin10010101001010011…
…100000001011011110
31220200020210012110021
4102221103200023132
5312000201044410
613110333102354
71306060002424
oct225123401336
956606705407
1020020331230
118543a56199
123a689279ba
131b70975a53
14d7cc99114
157c2934eda
hex4a94e02de

20020331230 has 16 divisors (see below), whose sum is σ = 36470773584. Its totient is φ = 7911648640.

The previous prime is 20020331203. The next prime is 20020331269. The reversal of 20020331230 is 3213302002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12059611 + ... + 12061270.

It is an arithmetic number, because the mean of its divisors is an integer number (2279423349).

Almost surely, 220020331230 is an apocalyptic number.

20020331230 is a deficient number, since it is larger than the sum of its proper divisors (16450442354).

20020331230 is a wasteful number, since it uses less digits than its factorization.

20020331230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24120971.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20020331230 its reverse (3213302002), we get a palindrome (23233633232).

The spelling of 20020331230 in words is "twenty billion, twenty million, three hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 83 166 415 830 24120881 48241762 120604405 241208810 2002033123 4004066246 10010165615 20020331230