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23130131211 = 32111297180137
BaseRepresentation
bin10101100010101010…
…011100101100001011
32012200222102102001100
4111202222130230023
5334332303144321
614343102552443
71446120604605
oct254252345413
965628372040
1023130131211
11989a3a0a20
124596298723
132248022595
141195cc4175
15905967326
hex562a9cb0b

23130131211 has 24 divisors (see below), whose sum is σ = 36475783344. Its totient is φ = 14007375360.

The previous prime is 23130131179. The next prime is 23130131267. The reversal of 23130131211 is 11213103132.

It is not a de Polignac number, because 23130131211 - 25 = 23130131179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23130132211) 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 23 ways as a sum of consecutive naturals, for example, 38335 + ... + 218471.

It is an arithmetic number, because the mean of its divisors is an integer number (1519824306).

Almost surely, 223130131211 is an apocalyptic number.

23130131211 is a deficient number, since it is larger than the sum of its proper divisors (13345652133).

23130131211 is a wasteful number, since it uses less digits than its factorization.

23130131211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181451 (or 181448 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 23130131211 its reverse (11213103132), we get a palindrome (34343234343).

The spelling of 23130131211 in words is "twenty-three billion, one hundred thirty million, one hundred thirty-one thousand, two hundred eleven".

Divisors: 1 3 9 11 33 99 1297 3891 11673 14267 42801 128403 180137 540411 1621233 1981507 5944521 17833563 233637689 700913067 2102739201 2570014579 7710043737 23130131211