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13343261 = 103312917
BaseRepresentation
bin110010111001…
…101000011101
3221002220111212
4302321220131
511403441021
61153554205
7221262431
oct62715035
927086455
1013343261
117593a98
124575965
1329c2529
141ab49c1
15128885b
hexcb9a1d

13343261 has 4 divisors (see below), whose sum is σ = 13357212. Its totient is φ = 13329312.

The previous prime is 13343257. The next prime is 13343269. The reversal of 13343261 is 16234331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16234331 = 32095059.

It can be written as a sum of positive squares in 2 ways, for example, as 10686361 + 2656900 = 3269^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 13343261 - 22 = 13343257 is a prime.

It is a super-2 number, since 2×133432612 = 356085228228242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13343269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5426 + ... + 7491.

It is an arithmetic number, because the mean of its divisors is an integer number (3339303).

Almost surely, 213343261 is an apocalyptic number.

It is an amenable number.

13343261 is a deficient number, since it is larger than the sum of its proper divisors (13951).

13343261 is a wasteful number, since it uses less digits than its factorization.

13343261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13950.

The product of its digits is 1296, while the sum is 23.

The square root of 13343261 is about 3652.8428654953. The cubic root of 13343261 is about 237.1850584504.

Adding to 13343261 its reverse (16234331), we get a palindrome (29577592).

The spelling of 13343261 in words is "thirteen million, three hundred forty-three thousand, two hundred sixty-one".

Divisors: 1 1033 12917 13343261