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243130151 = 11179123479
BaseRepresentation
bin11100111110111…
…01111100100111
3121221111021212102
432133131330213
5444220131101
640043042315
76011400155
oct1637357447
9557437772
10243130151
11115271310
126951039b
133b4a87c4
142440c3d5
151652886b
hexe7ddf27

243130151 has 8 divisors (see below), whose sum is σ = 266716800. Its totient is φ = 219790840.

The previous prime is 243130109. The next prime is 243130169. The reversal of 243130151 is 151031342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-243130151 is a prime.

It is a super-2 number, since 2×2431301512 = 118224540650565602, 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 (243130051) 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, 59771 + ... + 63708.

It is an arithmetic number, because the mean of its divisors is an integer number (33339600).

Almost surely, 2243130151 is an apocalyptic number.

243130151 is a deficient number, since it is larger than the sum of its proper divisors (23586649).

243130151 is a wasteful number, since it uses less digits than its factorization.

243130151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123669.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 243130151 is about 15592.6313045618. The cubic root of 243130151 is about 624.1365364919.

Adding to 243130151 its reverse (151031342), we get a palindrome (394161493).

The spelling of 243130151 in words is "two hundred forty-three million, one hundred thirty thousand, one hundred fifty-one".

Divisors: 1 11 179 1969 123479 1358269 22102741 243130151