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12310120123 = 72081845069
BaseRepresentation
bin10110111011011110…
…11000011010111011
31011202220122220011221
423131233120122323
5200202342320443
65353304332511
7614025203020
oct133557303273
934686586157
1012310120123
1152478184a4
122476774137
131212496a62
1484aca7547
154c0acceed
hex2ddbd86bb

12310120123 has 8 divisors (see below), whose sum is σ = 14075485920. Its totient is φ = 10546448640.

The previous prime is 12310120093. The next prime is 12310120139. The reversal of 12310120123 is 32102101321.

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

It is not a de Polignac number, because 12310120123 - 221 = 12308022971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12310120097 and 12310120106.

It is not an unprimeable number, because it can be changed into a prime (12310120423) 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, 407968 + ... + 437101.

It is an arithmetic number, because the mean of its divisors is an integer number (1759435740).

Almost surely, 212310120123 is an apocalyptic number.

12310120123 is a deficient number, since it is larger than the sum of its proper divisors (1765365797).

12310120123 is an equidigital number, since it uses as much as digits as its factorization.

12310120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847157.

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

Adding to 12310120123 its reverse (32102101321), we get a palindrome (44412221444).

The spelling of 12310120123 in words is "twelve billion, three hundred ten million, one hundred twenty thousand, one hundred twenty-three".

Divisors: 1 7 2081 14567 845069 5915483 1758588589 12310120123