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13212043 = 1317191313
BaseRepresentation
bin110010011001…
…100110001011
3220212020111221
4302121212023
511340241133
61151102511
7220205035
oct62314613
926766457
1013212043
117504449
124511a37
1329778a0
141a7cc55
15125ea2d
hexc9998b

13212043 has 16 divisors (see below), whose sum is σ = 15192576. Its totient is φ = 11381760.

The previous prime is 13212013. The next prime is 13212053. The reversal of 13212043 is 34021231.

It is a happy number.

13212043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13212043 - 29 = 13211531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42055 + ... + 42367.

It is an arithmetic number, because the mean of its divisors is an integer number (949536).

Almost surely, 213212043 is an apocalyptic number.

13212043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13212043 is a deficient number, since it is larger than the sum of its proper divisors (1980533).

13212043 is a wasteful number, since it uses less digits than its factorization.

13212043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13212043 is about 3634.8374103940. The cubic root of 13212043 is about 236.4050009774.

Adding to 13212043 its reverse (34021231), we get a palindrome (47233274).

It can be divided in two parts, 1321 and 2043, that added together give a square (3364 = 582).

The spelling of 13212043 in words is "thirteen million, two hundred twelve thousand, forty-three".

Divisors: 1 13 17 191 221 313 2483 3247 4069 5321 42211 59783 69173 777179 1016311 13212043