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230031340 = 225711149371
BaseRepresentation
bin11011011010111…
…11111111101100
3121000211210200021
431231133333230
5432342000330
634454211524
75462143210
oct1555377754
9530753607
10230031340
11108934a50
1265053ba4
1338870626
142279c940
15152dc67a
hexdb5ffec

230031340 has 48 divisors (see below), whose sum is σ = 602267904. Its totient is φ = 71697600.

The previous prime is 230031313. The next prime is 230031341. The reversal of 230031340 is 43130032.

It is not an unprimeable number, because it can be changed into a prime (230031341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73146 + ... + 76225.

It is an arithmetic number, because the mean of its divisors is an integer number (12547248).

Almost surely, 2230031340 is an apocalyptic number.

230031340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230031340 is an abundant number, since it is smaller than the sum of its proper divisors (372236564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230031340 is a wasteful number, since it uses less digits than its factorization.

230031340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149398 (or 149396 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 230031340 is about 15166.7841021095. The cubic root of 230031340 is about 612.7203949330.

Adding to 230031340 its reverse (43130032), we get a palindrome (273161372).

The spelling of 230031340 in words is "two hundred thirty million, thirty-one thousand, three hundred forty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 1540 149371 298742 597484 746855 1045597 1493710 1643081 2091194 2987420 3286162 4182388 5227985 6572324 8215405 10455970 11501567 16430810 20911940 23003134 32861620 46006268 57507835 115015670 230031340