Search a number
-
+
13111253 = 20696337
BaseRepresentation
bin110010000000…
…111111010101
3220200010020222
4302000333111
511324030003
61145004125
7216305141
oct62007725
926603228
1013111253
117445751
124483645
132940a4c
141a54221
15123ec38
hexc80fd5

13111253 has 4 divisors (see below), whose sum is σ = 13119660. Its totient is φ = 13102848.

The previous prime is 13111237. The next prime is 13111271. The reversal of 13111253 is 35211131.

13111253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3232804 + 9878449 = 1798^2 + 3143^2 .

It is a cyclic number.

It is not a de Polignac number, because 13111253 - 24 = 13111237 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 (13011253) 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, 1100 + ... + 5237.

It is an arithmetic number, because the mean of its divisors is an integer number (3279915).

Almost surely, 213111253 is an apocalyptic number.

It is an amenable number.

13111253 is a deficient number, since it is larger than the sum of its proper divisors (8407).

13111253 is an equidigital number, since it uses as much as digits as its factorization.

13111253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406.

The product of its digits is 90, while the sum is 17.

The square root of 13111253 is about 3620.9464232435. The cubic root of 13111253 is about 235.8023157842.

Adding to 13111253 its reverse (35211131), we get a palindrome (48322384).

The spelling of 13111253 in words is "thirteen million, one hundred eleven thousand, two hundred fifty-three".

Divisors: 1 2069 6337 13111253