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12120012313 = 223112348397
BaseRepresentation
bin10110100100110100…
…01011011000011001
31011021122221102021221
423102122023120121
5144310210343223
65322353532041
7606226255603
oct132232133031
934248842257
1012120012313
11515a481702
122422b74021
1311b1c94226
1482d93c173
154ae079b5d
hex2d268b619

12120012313 has 8 divisors (see below), whose sum is σ = 12185454848. Its totient is φ = 12054669264.

The previous prime is 12120012299. The next prime is 12120012319. The reversal of 12120012313 is 31321002121.

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 12120012313 - 233 = 3530077721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120012319) 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, 226231 + ... + 274627.

It is an arithmetic number, because the mean of its divisors is an integer number (1523181856).

Almost surely, 212120012313 is an apocalyptic number.

It is an amenable number.

12120012313 is a deficient number, since it is larger than the sum of its proper divisors (65442535).

12120012313 is a wasteful number, since it uses less digits than its factorization.

12120012313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49743.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12120012313 its reverse (31321002121), we get a palindrome (43441014434).

The spelling of 12120012313 in words is "twelve billion, one hundred twenty million, twelve thousand, three hundred thirteen".

Divisors: 1 223 1123 48397 250429 10792531 54349831 12120012313