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230031230 = 251113160861
BaseRepresentation
bin11011011010111…
…11111101111110
3121000211210112012
431231133331332
5432341444410
634454211222
75462142662
oct1555377576
9530753465
10230031230
11108934960
1265053b12
1338870570
142279c8a2
15152dc605
hexdb5ff7e

230031230 has 32 divisors (see below), whose sum is σ = 486446688. Its totient is φ = 77212800.

The previous prime is 230031169. The next prime is 230031251. The reversal of 230031230 is 32130032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79001 + ... + 81860.

It is an arithmetic number, because the mean of its divisors is an integer number (15201459).

Almost surely, 2230031230 is an apocalyptic number.

230031230 is an abundant number, since it is smaller than the sum of its proper divisors (256415458).

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

230031230 is a wasteful number, since it uses less digits than its factorization.

230031230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160892.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 230031230 is about 15166.7804757635. The cubic root of 230031230 is about 612.7202972662.

Adding to 230031230 its reverse (32130032), we get a palindrome (262161262).

The spelling of 230031230 in words is "two hundred thirty million, thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 11 13 22 26 55 65 110 130 143 286 715 1430 160861 321722 804305 1608610 1769471 2091193 3538942 4182386 8847355 10455965 17694710 20911930 23003123 46006246 115015615 230031230