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20123303030 = 2525763112409
BaseRepresentation
bin10010101111011100…
…010011110001110110
31220221102112201012122
4102233130103301312
5312203031144110
613124452115542
71311450152645
oct225734236166
956842481178
1020123303030
118597097456
123a97305bb2
131b890ba0cc
14d8c82135c
157cb9c5255
hex4af713c76

20123303030 has 32 divisors (see below), whose sum is σ = 36423449280. Its totient is φ = 8004648960.

The previous prime is 20123302999. The next prime is 20123303041. The reversal of 20123303030 is 3030332102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1615466 + ... + 1627874.

It is an arithmetic number, because the mean of its divisors is an integer number (1138232790).

Almost surely, 220123303030 is an apocalyptic number.

20123303030 is a deficient number, since it is larger than the sum of its proper divisors (16300146250).

20123303030 is a wasteful number, since it uses less digits than its factorization.

20123303030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13304.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 20123303030 its reverse (3030332102), we get a palindrome (23153635132).

The spelling of 20123303030 in words is "twenty billion, one hundred twenty-three million, three hundred three thousand, thirty".

Divisors: 1 2 5 10 257 514 631 1262 1285 2570 3155 6310 12409 24818 62045 124090 162167 324334 810835 1621670 3189113 6378226 7830079 15660158 15945565 31891130 39150395 78300790 2012330303 4024660606 10061651515 20123303030