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123203303213 = 1103268941539
BaseRepresentation
bin111001010111101111…
…1010011011100101101
3102210000020202021102012
41302233133103130231
54004310021200323
6132333202211005
711621043540554
oct1625737233455
9383006667365
10123203303213
1148283064251
121ba64653a65
13b805a41563
145d6a950d9b
153311307678
hex1caf7d372d

123203303213 has 8 divisors (see below), whose sum is σ = 123363830400. Its totient is φ = 123042866688.

The previous prime is 123203303203. The next prime is 123203303233. The reversal of 123203303213 is 312303302321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123203303213 - 26 = 123203303149 is a prime.

It is a super-2 number, since 2×1232033032132 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203303203) 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, 2945198 + ... + 2986736.

It is an arithmetic number, because the mean of its divisors is an integer number (15420478800).

Almost surely, 2123203303213 is an apocalyptic number.

It is an amenable number.

123203303213 is a deficient number, since it is larger than the sum of its proper divisors (160527187).

123203303213 is a wasteful number, since it uses less digits than its factorization.

123203303213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45331.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 123203303213 its reverse (312303302321), we get a palindrome (435506605534).

The spelling of 123203303213 in words is "one hundred twenty-three billion, two hundred three million, three hundred three thousand, two hundred thirteen".

Divisors: 1 1103 2689 41539 2965967 45817517 111698371 123203303213