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12123014231 = 47411162743
BaseRepresentation
bin10110100101001011…
…01000010001010111
31011021212120221011002
423102211220101113
5144311442423411
65322542133515
7606263630546
oct132245502127
934255527132
1012123014231
115161142029
122423b8129b
1311b27a5703
148300c015d
154ae46e33b
hex2d2968457

12123014231 has 8 divisors (see below), whose sum is σ = 12384159744. Its totient is φ = 11862002520.

The previous prime is 12123014153. The next prime is 12123014243. The reversal of 12123014231 is 13241032121.

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 12123014231 - 210 = 12123013207 is a prime.

It is a super-2 number, since 2×121230142312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123014261) 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, 161846 + ... + 224588.

It is an arithmetic number, because the mean of its divisors is an integer number (1548019968).

Almost surely, 212123014231 is an apocalyptic number.

12123014231 is a deficient number, since it is larger than the sum of its proper divisors (261145513).

12123014231 is an equidigital number, since it uses as much as digits as its factorization.

12123014231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66901.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12123014231 its reverse (13241032121), we get a palindrome (25364046352).

The spelling of 12123014231 in words is "twelve billion, one hundred twenty-three million, fourteen thousand, two hundred thirty-one".

Divisors: 1 47 4111 62743 193217 2948921 257936473 12123014231