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13012423 = 89293499
BaseRepresentation
bin110001101000…
…110111000111
3220111002200121
4301220313013
511312344143
61142522411
7215414044
oct61506707
926432617
1013012423
117388476
124436407
132907a78
141a2a1cb
1512207ed
hexc68dc7

13012423 has 8 divisors (see below), whose sum is σ = 13230000. Its totient is φ = 12796608.

The previous prime is 13012409. The next prime is 13012427. The reversal of 13012423 is 32421031.

It is a happy number.

13012423 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13012423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13012397 and 13012406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25828 + ... + 26326.

It is an arithmetic number, because the mean of its divisors is an integer number (1653750).

Almost surely, 213012423 is an apocalyptic number.

13012423 is a deficient number, since it is larger than the sum of its proper divisors (217577).

13012423 is an equidigital number, since it uses as much as digits as its factorization.

13012423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13012423 is about 3607.2736242209. The cubic root of 13012423 is about 235.2083439799.

Adding to 13012423 its reverse (32421031), we get a palindrome (45433454).

The spelling of 13012423 in words is "thirteen million, twelve thousand, four hundred twenty-three".

Divisors: 1 89 293 499 26077 44411 146207 13012423