Search a number
13123312 = 242928283
BaseRepresentation
bin110010000011…
…111011110000
3220200201210121
4302003323300
511324421222
61145140024
7216355246
oct62037360
926621717
1013123312
117453814
12448a614
132946397
141a58796
1512435c7
hexc83ef0

13123312 has 20 divisors (see below), whose sum is σ = 26304120. Its totient is φ = 6335168.

The previous prime is 13123307. The next prime is 13123339. The reversal of 13123312 is 21332131.

13123312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13678 + ... + 14605.

It is an arithmetic number, because the mean of its divisors is an integer number (1315206).

Almost surely, 213123312 is an apocalyptic number.

It is an amenable number.

13123312 is an abundant number, since it is smaller than the sum of its proper divisors (13180808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123312 is a wasteful number, since it uses less digits than its factorization.

13123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28320 (or 28314 counting only the distinct ones).

The product of its digits is 108, while the sum is 16.

The square root of 13123312 is about 3622.6112129236. The cubic root of 13123312 is about 235.8745862427.

Adding to 13123312 its reverse (21332131), we get a palindrome (34455443).

It can be divided in two parts, 1312 and 3312, that added together give a square (4624 = 682).

The spelling of 13123312 in words is "thirteen million, one hundred twenty-three thousand, three hundred twelve".