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12323102131 = 30194081849
BaseRepresentation
bin10110111101000001…
…11001110110110011
31011210211002110011001
423132200321312303
5200214203232011
65354450502431
7614243432314
oct133640716663
934724073131
1012323102131
11525408502a
12247ab94a17
131215090a12
1484c8c660b
154c1ce47c1
hex2de839db3

12323102131 has 4 divisors (see below), whose sum is σ = 12327187000. Its totient is φ = 12319017264.

The previous prime is 12323102119. The next prime is 12323102159. The reversal of 12323102131 is 13120132321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13120132321 = 88314858587.

It is a cyclic number.

It is not a de Polignac number, because 12323102131 - 221 = 12321004979 is a prime.

It is a super-2 number, since 2×123231021312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12323102099 and 12323102108.

It is not an unprimeable number, because it can be changed into a prime (12323102111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037906 + ... + 2043943.

It is an arithmetic number, because the mean of its divisors is an integer number (3081796750).

Almost surely, 212323102131 is an apocalyptic number.

12323102131 is a deficient number, since it is larger than the sum of its proper divisors (4084869).

12323102131 is an equidigital number, since it uses as much as digits as its factorization.

12323102131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4084868.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12323102131 its reverse (13120132321), we get a palindrome (25443234452).

The spelling of 12323102131 in words is "twelve billion, three hundred twenty-three million, one hundred two thousand, one hundred thirty-one".

Divisors: 1 3019 4081849 12323102131