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231242030 = 2571325693
BaseRepresentation
bin11011100100001…
…11100100101110
3121010010022102122
431302013210232
5433144221110
634540152542
75505345005
oct1562074456
9533108378
10231242030
11109591618
1265538752
1338ba5706
14229d5c3c
151547b255
hexdc8792e

231242030 has 16 divisors (see below), whose sum is σ = 422099424. Its totient is φ = 91193760.

The previous prime is 231242029. The next prime is 231242047. The reversal of 231242030 is 30242132.

231242030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162137 + ... + 163556.

It is an arithmetic number, because the mean of its divisors is an integer number (26381214).

Almost surely, 2231242030 is an apocalyptic number.

231242030 is a deficient number, since it is larger than the sum of its proper divisors (190857394).

231242030 is a wasteful number, since it uses less digits than its factorization.

231242030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325771.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 231242030 is about 15206.6442715018. The cubic root of 231242030 is about 613.7934614978.

Adding to 231242030 its reverse (30242132), we get a palindrome (261484162).

The spelling of 231242030 in words is "two hundred thirty-one million, two hundred forty-two thousand, thirty".

Divisors: 1 2 5 10 71 142 355 710 325693 651386 1628465 3256930 23124203 46248406 115621015 231242030