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13235423 = 79167537
BaseRepresentation
bin110010011111…
…010011011111
3220220102120212
4302133103133
511342013143
61151403035
7220333145
oct62372337
926812525
1013235423
11751aa73
12452347b
132985416
141a87595
151266918
hexc9f4df

13235423 has 4 divisors (see below), whose sum is σ = 13403040. Its totient is φ = 13067808.

The previous prime is 13235399. The next prime is 13235447. The reversal of 13235423 is 32453231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32453231 = 46769493.

It is an interprime number because it is at equal distance from previous prime (13235399) and next prime (13235447).

It is a cyclic number.

It is not a de Polignac number, because 13235423 - 210 = 13234399 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 (13235473) 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, 83690 + ... + 83847.

It is an arithmetic number, because the mean of its divisors is an integer number (3350760).

Almost surely, 213235423 is an apocalyptic number.

13235423 is a deficient number, since it is larger than the sum of its proper divisors (167617).

13235423 is an equidigital number, since it uses as much as digits as its factorization.

13235423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167616.

The product of its digits is 2160, while the sum is 23.

The square root of 13235423 is about 3638.0520886870. The cubic root of 13235423 is about 236.5443660463.

Adding to 13235423 its reverse (32453231), we get a palindrome (45688654).

The spelling of 13235423 in words is "thirteen million, two hundred thirty-five thousand, four hundred twenty-three".

Divisors: 1 79 167537 13235423