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23130120030 = 235771004001
BaseRepresentation
bin10101100010101010…
…011001111101011110
32012200222101211201020
4111202222121331132
5334332302320110
614343102425010
71446120530163
oct254252317536
965628354636
1023130120030
11989a393586
124596292166
13224801a474
141195cc006a
15905963d70
hex562a99f5e

23130120030 has 16 divisors (see below), whose sum is σ = 55512288144. Its totient is φ = 6168032000.

The previous prime is 23130119939. The next prime is 23130120037. The reversal of 23130120030 is 3002103132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 23130119991 and 23130120009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130120037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385501971 + ... + 385502030.

It is an arithmetic number, because the mean of its divisors is an integer number (3469518009).

Almost surely, 223130120030 is an apocalyptic number.

23130120030 is an abundant number, since it is smaller than the sum of its proper divisors (32382168114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23130120030 is a wasteful number, since it uses less digits than its factorization.

23130120030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771004011.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 23130120030 its reverse (3002103132), we get a palindrome (26132223162).

The spelling of 23130120030 in words is "twenty-three billion, one hundred thirty million, one hundred twenty thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 771004001 1542008002 2313012003 3855020005 4626024006 7710040010 11565060015 23130120030