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10302232123 = 94710878809
BaseRepresentation
bin10011001100000111…
…11001011000111011
3222120222110121122201
421212003321120323
5132044332411443
64422140331031
7513204346111
oct114603713073
928528417581
1010302232123
114407383527
121bb6243a77
13c824ba251
146da357ab1
154046ad34d
hex2660f963b

10302232123 has 4 divisors (see below), whose sum is σ = 10313111880. Its totient is φ = 10291352368.

The previous prime is 10302232103. The next prime is 10302232181. The reversal of 10302232123 is 32123220301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32123220301 = 74594306639.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10302232123 is a prime.

It is a super-2 number, since 2×103022321232 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10302232123.

It is not an unprimeable number, because it can be changed into a prime (10302232103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5438458 + ... + 5440351.

It is an arithmetic number, because the mean of its divisors is an integer number (2578277970).

Almost surely, 210302232123 is an apocalyptic number.

10302232123 is a deficient number, since it is larger than the sum of its proper divisors (10879757).

10302232123 is an equidigital number, since it uses as much as digits as its factorization.

10302232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10879756.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 10302232123 its reverse (32123220301), we get a palindrome (42425452424).

The spelling of 10302232123 in words is "ten billion, three hundred two million, two hundred thirty-two thousand, one hundred twenty-three".

Divisors: 1 947 10878809 10302232123