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243104135 = 5232113949
BaseRepresentation
bin11100111110101…
…11100110000111
3121221102222011212
432133113212013
5444213313020
640042322035
76011231261
oct1637274607
9557388155
10243104135
1111525380a
12694b931b
133b499a01
1424402b31
1516520cc5
hexe7d7987

243104135 has 8 divisors (see below), whose sum is σ = 304408800. Its totient is φ = 186027424.

The previous prime is 243104083. The next prime is 243104137. The reversal of 243104135 is 531401342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243104135 - 214 = 243087751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 243104135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243104137) 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, 1056860 + ... + 1057089.

It is an arithmetic number, because the mean of its divisors is an integer number (38051100).

Almost surely, 2243104135 is an apocalyptic number.

243104135 is a deficient number, since it is larger than the sum of its proper divisors (61304665).

243104135 is a wasteful number, since it uses less digits than its factorization.

243104135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113977.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 243104135 is about 15591.7970420346. The cubic root of 243104135 is about 624.1142739091.

Adding to 243104135 its reverse (531401342), we get a palindrome (774505477).

The spelling of 243104135 in words is "two hundred forty-three million, one hundred four thousand, one hundred thirty-five".

Divisors: 1 5 23 115 2113949 10569745 48620827 243104135