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13123023 = 34374341
BaseRepresentation
bin110010000011…
…110111001111
3220200201101220
4302003313033
511324414043
61145134423
7216354354
oct62036717
926621356
1013123023
117453581
12448a413
132946204
141a5862b
151243483
hexc83dcf

13123023 has 4 divisors (see below), whose sum is σ = 17497368. Its totient is φ = 8748680.

The previous prime is 13123021. The next prime is 13123039. The reversal of 13123023 is 32032131.

Adding to 13123023 its reverse (32032131), we get a palindrome (45155154).

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

It is a cyclic number.

It is not a de Polignac number, because 13123023 - 21 = 13123021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13122993 and 13123011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123021) 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, 2187168 + ... + 2187173.

It is an arithmetic number, because the mean of its divisors is an integer number (4374342).

Almost surely, 213123023 is an apocalyptic number.

13123023 is a deficient number, since it is larger than the sum of its proper divisors (4374345).

13123023 is an equidigital number, since it uses as much as digits as its factorization.

13123023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374344.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13123023 is about 3622.5713243496. The cubic root of 13123023 is about 235.8728547627.

The spelling of 13123023 in words is "thirteen million, one hundred twenty-three thousand, twenty-three".

Divisors: 1 3 4374341 13123023