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13303423 = 71900489
BaseRepresentation
bin110010101111…
…111001111111
3221000212212101
4302233321333
511401202143
61153045531
7221035330
oct62577177
927025771
1013303423
117567071
1245568a7
1329aa363
141aa4287
15127bb4d
hexcafe7f

13303423 has 4 divisors (see below), whose sum is σ = 15203920. Its totient is φ = 11402928.

The previous prime is 13303403. The next prime is 13303471. The reversal of 13303423 is 32430331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32430331 = 67747903.

It is a cyclic number.

It is not a de Polignac number, because 13303423 - 25 = 13303391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13303423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13303403) 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, 950238 + ... + 950251.

It is an arithmetic number, because the mean of its divisors is an integer number (3800980).

Almost surely, 213303423 is an apocalyptic number.

13303423 is a deficient number, since it is larger than the sum of its proper divisors (1900497).

13303423 is an equidigital number, since it uses as much as digits as its factorization.

13303423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900496.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 13303423 is about 3647.3857761416. The cubic root of 13303423 is about 236.9487744392.

Adding to 13303423 its reverse (32430331), we get a palindrome (45733754).

It can be divided in two parts, 1330 and 3423, that added together give a triangular number (4753 = T97).

The spelling of 13303423 in words is "thirteen million, three hundred three thousand, four hundred twenty-three".

Divisors: 1 7 1900489 13303423