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148385231 = 1719459397
BaseRepresentation
bin10001101100000…
…10110111001111
3101100012202021022
420312002313033
5300441311411
622420224355
73451153001
oct1066026717
9340182238
10148385231
117683a025
124183b0bb
1324984c17
14159c8371
15d060edb
hex8d82dcf

148385231 has 8 divisors (see below), whose sum is σ = 165383280. Its totient is φ = 132306048.

The previous prime is 148385227. The next prime is 148385249. The reversal of 148385231 is 132583841.

148385231 = 1192 + 1202 + ... + 7642.

It is a happy number.

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 148385231 - 22 = 148385227 is a prime.

It is a super-2 number, since 2×1483852312 = 44036353557846722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 148385191 and 148385200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148385201) 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, 229376 + ... + 230021.

It is an arithmetic number, because the mean of its divisors is an integer number (20672910).

Almost surely, 2148385231 is an apocalyptic number.

148385231 is a deficient number, since it is larger than the sum of its proper divisors (16998049).

148385231 is a wasteful number, since it uses less digits than its factorization.

148385231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459433.

The product of its digits is 23040, while the sum is 35.

The square root of 148385231 is about 12181.3476676433. The cubic root of 148385231 is about 529.4157927321.

The spelling of 148385231 in words is "one hundred forty-eight million, three hundred eighty-five thousand, two hundred thirty-one".

Divisors: 1 17 19 323 459397 7809749 8728543 148385231