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12312104455 = 57351774413
BaseRepresentation
bin10110111011101101…
…11100111000000111
31011210001101201011201
423131312330320013
5200203344320310
65353415043331
7614051106160
oct133566747007
934701351151
1012312104455
115248953342
122477370547
131212a10011
1484b262767
154c0d70e3a
hex2dddbce07

12312104455 has 8 divisors (see below), whose sum is σ = 16885171872. Its totient is φ = 8442585888.

The previous prime is 12312104437. The next prime is 12312104477. The reversal of 12312104455 is 55440121321.

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 12312104455 - 213 = 12312096263 is a prime.

It is a super-2 number, since 2×123121044552 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175887172 + ... + 175887241.

It is an arithmetic number, because the mean of its divisors is an integer number (2110646484).

Almost surely, 212312104455 is an apocalyptic number.

12312104455 is a deficient number, since it is larger than the sum of its proper divisors (4573067417).

12312104455 is an equidigital number, since it uses as much as digits as its factorization.

12312104455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351774425.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 12312104455 its reverse (55440121321), we get a palindrome (67752225776).

The spelling of 12312104455 in words is "twelve billion, three hundred twelve million, one hundred four thousand, four hundred fifty-five".

Divisors: 1 5 7 35 351774413 1758872065 2462420891 12312104455