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23003101021 = 2337131206341
BaseRepresentation
bin10101011011000101…
…110111011101011101
32012101010101121101111
4111123011313131131
5334102243213041
614322324142021
71443016063315
oct253305673535
965333347344
1023003101021
11983471829a
12455b837911
1322279067a4
141183098445
158e9723981
hex55b17775d

23003101021 has 16 divisors (see below), whose sum is σ = 24840275328. Its totient is φ = 21244766400.

The previous prime is 23003100983. The next prime is 23003101057. The reversal of 23003101021 is 12010130032.

It is a cyclic number.

It is not a de Polignac number, because 23003101021 - 29 = 23003100509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23003100992 and 23003101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003201021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8311 + ... + 214651.

It is an arithmetic number, because the mean of its divisors is an integer number (1552517208).

Almost surely, 223003101021 is an apocalyptic number.

It is an amenable number.

23003101021 is a deficient number, since it is larger than the sum of its proper divisors (1837174307).

23003101021 is a wasteful number, since it uses less digits than its factorization.

23003101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206532.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 23003101021 its reverse (12010130032), we get a palindrome (35013231053).

The spelling of 23003101021 in words is "twenty-three billion, three million, one hundred one thousand, twenty-one".

Divisors: 1 23 37 131 851 3013 4847 111481 206341 4745843 7634617 27030671 175596191 621705433 1000134827 23003101021