Search a number
-
+
13244113031 = 48661272171
BaseRepresentation
bin11000101010110100…
…10010000010000111
31021012000010122120212
430111122102002013
5204110443104111
610030111150035
7646126050302
oct142532220207
937160118525
1013244113031
115686a58166
12269751531b
131330b32996
148d8d51b39
15527ac198b
hex315692087

13244113031 has 4 divisors (see below), whose sum is σ = 13244433864. Its totient is φ = 13243792200.

The previous prime is 13244113021. The next prime is 13244113063. The reversal of 13244113031 is 13031144231.

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 13244113031 - 26 = 13244112967 is a prime.

It is a super-2 number, since 2×132441130312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13244112988 and 13244113006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13244113021) 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, 87425 + ... + 184746.

It is an arithmetic number, because the mean of its divisors is an integer number (3311108466).

Almost surely, 213244113031 is an apocalyptic number.

13244113031 is a deficient number, since it is larger than the sum of its proper divisors (320833).

13244113031 is an equidigital number, since it uses as much as digits as its factorization.

13244113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320832.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 13244113031 its reverse (13031144231), we get a palindrome (26275257262).

The spelling of 13244113031 in words is "thirteen billion, two hundred forty-four million, one hundred thirteen thousand, thirty-one".

Divisors: 1 48661 272171 13244113031