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13312313 = 71901759
BaseRepresentation
bin110010110010…
…000100111001
3221001100001122
4302302010321
511401443223
61153155025
7221103260
oct62620471
927040048
1013312313
117572813
12455ba75
1329b1411
141aa75d7
15127e5c8
hexcb2139

13312313 has 4 divisors (see below), whose sum is σ = 15214080. Its totient is φ = 11410548.

The previous prime is 13312307. The next prime is 13312319. The reversal of 13312313 is 31321331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (13312307) and next prime (13312319).

It is a cyclic number.

It is not a de Polignac number, because 13312313 - 220 = 12263737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13312291 and 13312300.

It is not an unprimeable number, because it can be changed into a prime (13312319) 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, 950873 + ... + 950886.

It is an arithmetic number, because the mean of its divisors is an integer number (3803520).

Almost surely, 213312313 is an apocalyptic number.

It is an amenable number.

13312313 is a deficient number, since it is larger than the sum of its proper divisors (1901767).

13312313 is an equidigital number, since it uses as much as digits as its factorization.

13312313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901766.

The product of its digits is 162, while the sum is 17.

The square root of 13312313 is about 3648.6042536839. The cubic root of 13312313 is about 237.0015429526.

Adding to 13312313 its reverse (31321331), we get a palindrome (44633644).

The spelling of 13312313 in words is "thirteen million, three hundred twelve thousand, three hundred thirteen".

Divisors: 1 7 1901759 13312313