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23130220013 = 32587709799
BaseRepresentation
bin10101100010101010…
…110010010111101101
32012200222120220212022
4111202222302113231
5334332314020023
614343104515525
71446121424525
oct254252622755
965628526768
1023130220013
11989a45170a
12459631bba5
132248053b24
141195d08685
159059837c8
hex562ab25ed

23130220013 has 4 divisors (see below), whose sum is σ = 23130962400. Its totient is φ = 23129477628.

The previous prime is 23130220007. The next prime is 23130220039. The reversal of 23130220013 is 31002203132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23130220013 - 212 = 23130215917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23130219973 and 23130220000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130220613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322313 + ... + 387486.

It is an arithmetic number, because the mean of its divisors is an integer number (5782740600).

Almost surely, 223130220013 is an apocalyptic number.

It is an amenable number.

23130220013 is a deficient number, since it is larger than the sum of its proper divisors (742387).

23130220013 is an equidigital number, since it uses as much as digits as its factorization.

23130220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742386.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23130220013 its reverse (31002203132), we get a palindrome (54132423145).

The spelling of 23130220013 in words is "twenty-three billion, one hundred thirty million, two hundred twenty thousand, thirteen".

Divisors: 1 32587 709799 23130220013