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240065231 = 7271312641
BaseRepresentation
bin11100100111100…
…01101011001111
3121201201120120212
432103301223033
5442424041411
635453233035
75643343430
oct1623615317
9551646525
10240065231
1111356861a
126849277b
133a974743
1423c51487
151612068b
hexe4f1acf

240065231 has 8 divisors (see below), whose sum is σ = 274483104. Its totient is φ = 205678080.

The previous prime is 240065201. The next prime is 240065239. The reversal of 240065231 is 132560042.

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 240065231 - 210 = 240064207 is a prime.

It is a super-2 number, since 2×2400652312 = 115262630270166722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240065197 and 240065206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240065239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12671 + ... + 25311.

It is an arithmetic number, because the mean of its divisors is an integer number (34310388).

Almost surely, 2240065231 is an apocalyptic number.

240065231 is a deficient number, since it is larger than the sum of its proper divisors (34417873).

240065231 is a wasteful number, since it uses less digits than its factorization.

240065231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15361.

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

The square root of 240065231 is about 15494.0385632668. The cubic root of 240065231 is about 621.5027982805.

The spelling of 240065231 in words is "two hundred forty million, sixty-five thousand, two hundred thirty-one".

Divisors: 1 7 2713 12641 18991 88487 34295033 240065231