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13111332 = 2231384047
BaseRepresentation
bin110010000001…
…000000100100
3220200010100220
4302001000210
511324030312
61145004340
7216305313
oct62010044
926603326
1013111332
117445813
1244836b0
132940ab0
141a5427a
15123ec8c
hexc81024

13111332 has 24 divisors (see below), whose sum is σ = 32946816. Its totient is φ = 4034208.

The previous prime is 13111327. The next prime is 13111333. The reversal of 13111332 is 23311131.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (13111333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41868 + ... + 42179.

It is an arithmetic number, because the mean of its divisors is an integer number (1372784).

Almost surely, 213111332 is an apocalyptic number.

13111332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13111332 is an abundant number, since it is smaller than the sum of its proper divisors (19835484).

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

13111332 is a wasteful number, since it uses less digits than its factorization.

13111332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84067 (or 84065 counting only the distinct ones).

The product of its digits is 54, while the sum is 15.

The square root of 13111332 is about 3620.9573319773. The cubic root of 13111332 is about 235.8027893811.

Adding to 13111332 its reverse (23311131), we get a palindrome (36422463).

The spelling of 13111332 in words is "thirteen million, one hundred eleven thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 84047 168094 252141 336188 504282 1008564 1092611 2185222 3277833 4370444 6555666 13111332