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13122323 = 53247591
BaseRepresentation
bin110010000011…
…101100010011
3220200200102222
4302003230103
511324403243
61145131255
7216352334
oct62035423
926620388
1013122323
117452aa5
124489b2b
132945ab6
141a5828b
151243168
hexc83b13

13122323 has 4 divisors (see below), whose sum is σ = 13369968. Its totient is φ = 12874680.

The previous prime is 13122313. The next prime is 13122341. The reversal of 13122323 is 32322131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32322131 = 61529871.

It is a cyclic number.

It is not a de Polignac number, because 13122323 - 216 = 13056787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13122313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123743 + ... + 123848.

It is an arithmetic number, because the mean of its divisors is an integer number (3342492).

Almost surely, 213122323 is an apocalyptic number.

13122323 is a deficient number, since it is larger than the sum of its proper divisors (247645).

13122323 is an equidigital number, since it uses as much as digits as its factorization.

13122323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247644.

The product of its digits is 216, while the sum is 17.

The square root of 13122323 is about 3622.4747066060. The cubic root of 13122323 is about 235.8686607612.

Adding to 13122323 its reverse (32322131), we get a palindrome (45444454).

The spelling of 13122323 in words is "thirteen million, one hundred twenty-two thousand, three hundred twenty-three".

Divisors: 1 53 247591 13122323