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135340261 = 7223277313
BaseRepresentation
bin10000001000100…
…10000011100101
3100102122222221021
420010102003211
5234121342021
621232451141
73232242010
oct1004220345
9312588837
10135340261
116a43a161
12393a9ab1
13220683c4
1413d90377
15bd35c41
hex81120e5

135340261 has 16 divisors (see below), whose sum is σ = 156427264. Its totient is φ = 114701184.

The previous prime is 135340259. The next prime is 135340267. The reversal of 135340261 is 162043531.

It is a cyclic number.

It is not a de Polignac number, because 135340261 - 21 = 135340259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135340267) 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, 432241 + ... + 432553.

It is an arithmetic number, because the mean of its divisors is an integer number (9776704).

Almost surely, 2135340261 is an apocalyptic number.

It is an amenable number.

135340261 is a deficient number, since it is larger than the sum of its proper divisors (21087003).

135340261 is a wasteful number, since it uses less digits than its factorization.

135340261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 135340261 is about 11633.5833258717. The cubic root of 135340261 is about 513.4234136158.

Adding to 135340261 its reverse (162043531), we get a palindrome (297383792).

It can be divided in two parts, 1353 and 40261, that added together give a palindrome (41614).

The spelling of 135340261 in words is "one hundred thirty-five million, three hundred forty thousand, two hundred sixty-one".

Divisors: 1 7 223 277 313 1561 1939 2191 61771 69799 86701 432397 488593 606907 19334323 135340261