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154000231 = 7112000003
BaseRepresentation
bin10010010110111…
…01101101100111
3101201210000121021
421023131231213
5303411001411
623140432011
73546660160
oct1113355547
9351700537
10154000231
1179a24720
12436a8607
1325b9c8c8
141664a767
15d7bea71
hex92ddb67

154000231 has 8 divisors (see below), whose sum is σ = 192000384. Its totient is φ = 120000120.

The previous prime is 154000181. The next prime is 154000241. The reversal of 154000231 is 132000451.

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 154000231 - 211 = 153998183 is a prime.

It is a super-2 number, since 2×1540002312 = 47432142296106722, which contains 22 as substring.

It is a Duffinian number.

154000231 is a modest number, since divided by 231 gives 154 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154000241) 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, 999925 + ... + 1000078.

It is an arithmetic number, because the mean of its divisors is an integer number (24000048).

Almost surely, 2154000231 is an apocalyptic number.

154000231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

154000231 is a deficient number, since it is larger than the sum of its proper divisors (38000153).

154000231 is a wasteful number, since it uses less digits than its factorization.

154000231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000021.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 154000231 is about 12409.6829532426. The cubic root of 154000231 is about 536.0111091018.

Adding to 154000231 its reverse (132000451), we get a palindrome (286000682).

The spelling of 154000231 in words is "one hundred fifty-four million, two hundred thirty-one", and thus it is an aban number.

Divisors: 1 7 11 77 2000003 14000021 22000033 154000231