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BaseRepresentation
bin10101100010101010…
…011010101011111001
32012200222101222210021
4111202222122223321
5334332302414001
614343102450441
71446120541636
oct254252325371
965628358707
1023130123001
11989a395837
124596293a21
13224801b91b
141195cc118d
15905964ba1
hex562a9aaf9

23130123001 has 4 divisors (see below), whose sum is σ = 23152778404. Its totient is φ = 23107467600.

The previous prime is 23130122987. The next prime is 23130123011. The reversal of 23130123001 is 10032103132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4218372601 + 18911750400 = 64949^2 + 137520^2 .

It is a cyclic number.

It is not a de Polignac number, because 23130123001 - 221 = 23128025849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23130123011) 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, 11326170 + ... + 11328211.

It is an arithmetic number, because the mean of its divisors is an integer number (5788194601).

Almost surely, 223130123001 is an apocalyptic number.

It is an amenable number.

23130123001 is a deficient number, since it is larger than the sum of its proper divisors (22655403).

23130123001 is a wasteful number, since it uses less digits than its factorization.

23130123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22655402.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 23130123001 its reverse (10032103132), we get a palindrome (33162226133).

The spelling of 23130123001 in words is "twenty-three billion, one hundred thirty million, one hundred twenty-three thousand, one".

Divisors: 1 1021 22654381 23130123001