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13313253 = 34437751
BaseRepresentation
bin110010110010…
…010011100101
3221001101100110
4302302103211
511402011003
61153203233
7221106102
oct62622345
927041313
1013313253
117573498
124560519
1329b1985
141aa7aa9
15127ea03
hexcb24e5

13313253 has 4 divisors (see below), whose sum is σ = 17751008. Its totient is φ = 8875500.

The previous prime is 13313221. The next prime is 13313257. The reversal of 13313253 is 35231331.

13313253 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 13313253 - 25 = 13313221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13313257) 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, 2218873 + ... + 2218878.

It is an arithmetic number, because the mean of its divisors is an integer number (4437752).

Almost surely, 213313253 is an apocalyptic number.

It is an amenable number.

13313253 is a deficient number, since it is larger than the sum of its proper divisors (4437755).

13313253 is an equidigital number, since it uses as much as digits as its factorization.

13313253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437754.

The product of its digits is 810, while the sum is 21.

The square root of 13313253 is about 3648.7330677922. The cubic root of 13313253 is about 237.0071211519.

Adding to 13313253 its reverse (35231331), we get a palindrome (48544584).

The spelling of 13313253 in words is "thirteen million, three hundred thirteen thousand, two hundred fifty-three".

Divisors: 1 3 4437751 13313253