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13231230323 = 14407918389
BaseRepresentation
bin11000101001010010…
…01000110101110011
31021011002220010211112
430110221020311303
5204044143332243
610024531103535
7645611413343
oct142451106563
937132803745
1013231230323
11567a7591a3
122693141bab
13132b271c8c
148d735ad23
155268c9818
hex314a48d73

13231230323 has 4 divisors (see below), whose sum is σ = 13232163120. Its totient is φ = 13230297528.

The previous prime is 13231230293. The next prime is 13231230343. The reversal of 13231230323 is 32303213231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13231230323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231230343) 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, 444788 + ... + 473601.

It is an arithmetic number, because the mean of its divisors is an integer number (3308040780).

Almost surely, 213231230323 is an apocalyptic number.

13231230323 is a deficient number, since it is larger than the sum of its proper divisors (932797).

13231230323 is an equidigital number, since it uses as much as digits as its factorization.

13231230323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932796.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 13231230323 its reverse (32303213231), we get a palindrome (45534443554).

The spelling of 13231230323 in words is "thirteen billion, two hundred thirty-one million, two hundred thirty thousand, three hundred twenty-three".

Divisors: 1 14407 918389 13231230323