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20000231003 = 192391949801
BaseRepresentation
bin10010101000000110…
…110100111001011011
31220121211222000010102
4102220012310321123
5311430024343003
613104334210015
71305424105244
oct225006647133
956554860112
1020000231003
118533677635
123a6205390b
131b69758b1c
14d7a345ccb
157c0cb4588
hex4a81b4e5b

20000231003 has 16 divisors (see below), whose sum is σ = 21992563200. Its totient is φ = 18103694400.

The previous prime is 20000230981. The next prime is 20000231039. The reversal of 20000231003 is 30013200002.

It is a cyclic number.

It is not a de Polignac number, because 20000231003 - 212 = 20000226907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20000531003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376703 + ... + 426503.

It is an arithmetic number, because the mean of its divisors is an integer number (1374535200).

Almost surely, 220000231003 is an apocalyptic number.

20000231003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20000231003 is a deficient number, since it is larger than the sum of its proper divisors (1992332197).

20000231003 is a wasteful number, since it uses less digits than its factorization.

20000231003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50762.

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 20000231003 its reverse (30013200002), we get a palindrome (50013431005).

The spelling of 20000231003 in words is "twenty billion, two hundred thirty-one thousand, three".

Divisors: 1 19 23 437 919 17461 21137 49801 401603 946219 1145423 21763037 45767119 869575261 1052643737 20000231003