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23031310122 = 23729317971
BaseRepresentation
bin10101011100110001…
…011110011100101010
32012110002110210000000
4111130301132130222
5334132003410442
614325212523430
71443510622512
oct253461363452
965402423000
1023031310122
1198496351a7
124569180576
132230702572
141186b1c842
158ebe46d4c
hex55cc5e72a

23031310122 has 64 divisors (see below), whose sum is σ = 51992277120. Its totient is φ = 7650475920.

The previous prime is 23031310063. The next prime is 23031310177. The reversal of 23031310122 is 22101313032.

23031310122 is a `hidden beast` number, since 230 + 3 + 1 + 310 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23031310095 and 23031310104.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1272597 + ... + 1290567.

It is an arithmetic number, because the mean of its divisors is an integer number (812379330).

Almost surely, 223031310122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23031310122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25996138560).

23031310122 is an abundant number, since it is smaller than the sum of its proper divisors (28960966998).

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

23031310122 is an equidigital number, since it uses as much as digits as its factorization.

23031310122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18287 (or 18269 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23031310122 its reverse (22101313032), we get a palindrome (45132623154).

The spelling of 23031310122 in words is "twenty-three billion, thirty-one million, three hundred ten thousand, one hundred twenty-two".

Divisors: 1 2 3 6 9 18 27 54 81 162 243 293 486 586 729 879 1458 1758 2187 2637 4374 5274 7911 15822 17971 23733 35942 47466 53913 71199 107826 142398 161739 213597 323478 427194 485217 640791 970434 1281582 1455651 2911302 4366953 5265503 8733906 10531006 13100859 15796509 26201718 31593018 39302577 47389527 78605154 94779054 142168581 284337162 426505743 853011486 1279517229 2559034458 3838551687 7677103374 11515655061 23031310122