Search a number
BaseRepresentation
bin110010010111…
…011001000101
3220211210010111
4302113121011
511334444023
61150553021
7220136515
oct62273105
926753114
1013203013
1174a868a
124508771
132973745
141a79845
15125c00d
hexc97645

13203013 has 2 divisors, whose sum is σ = 13203014. Its totient is φ = 13203012.

The previous prime is 13203011. The next prime is 13203017. The reversal of 13203013 is 31030231.

Adding to 13203013 its reverse (31030231), we get a palindrome (44233244).

13203013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11682724 + 1520289 = 3418^2 + 1233^2 .

It is a cyclic number.

It is not a de Polignac number, because 13203013 - 21 = 13203011 is a prime.

Together with 13203011, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13202984 and 13203002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13203011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6601506 + 6601507.

It is an arithmetic number, because the mean of its divisors is an integer number (6601507).

Almost surely, 213203013 is an apocalyptic number.

It is an amenable number.

13203013 is a deficient number, since it is larger than the sum of its proper divisors (1).

13203013 is an equidigital number, since it uses as much as digits as its factorization.

13203013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 13203013 is about 3633.5950517360. The cubic root of 13203013 is about 236.3511303362.

The spelling of 13203013 in words is "thirteen million, two hundred three thousand, thirteen".