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13230313123 = 31342269371
BaseRepresentation
bin11000101001001011…
…01000111010100011
31021011001011112200011
430110211220322203
5204043430004443
610024455305351
7645600543316
oct142445507243
937131145604
1013230313123
11567a192085
12269297b257
13132b010661
148d719c97d
15526797b9d
hex314968ea3

13230313123 has 4 divisors (see below), whose sum is σ = 13272582808. Its totient is φ = 13188043440.

The previous prime is 13230313091. The next prime is 13230313127. The reversal of 13230313123 is 32131303231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32131303231 = 89361025879.

It is a cyclic number.

It is not a de Polignac number, because 13230313123 - 25 = 13230313091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13230313094 and 13230313103.

It is not an unprimeable number, because it can be changed into a prime (13230313127) 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, 21134373 + ... + 21134998.

It is an arithmetic number, because the mean of its divisors is an integer number (3318145702).

Almost surely, 213230313123 is an apocalyptic number.

13230313123 is a deficient number, since it is larger than the sum of its proper divisors (42269685).

13230313123 is an equidigital number, since it uses as much as digits as its factorization.

13230313123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42269684.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 13230313123 its reverse (32131303231), we get a palindrome (45361616354).

The spelling of 13230313123 in words is "thirteen billion, two hundred thirty million, three hundred thirteen thousand, one hundred twenty-three".

Divisors: 1 313 42269371 13230313123