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231030452 = 2257757613
BaseRepresentation
bin11011100010100…
…11111010110100
3121002201120012102
431301103322310
5433120433302
634531441232
75503504112
oct1561237264
9532646172
10231030452
11109457664
1265456218
1338b30313
142297cab2
1515438702
hexdc53eb4

231030452 has 6 divisors (see below), whose sum is σ = 404303298. Its totient is φ = 115515224.

The previous prime is 231030433. The next prime is 231030463. The reversal of 231030452 is 254030132.

It is a happy number.

231030452 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 226382116 + 4648336 = 15046^2 + 2156^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28878803 + ... + 28878810.

It is an arithmetic number, because the mean of its divisors is an integer number (67383883).

Almost surely, 2231030452 is an apocalyptic number.

It is an amenable number.

231030452 is a deficient number, since it is larger than the sum of its proper divisors (173272846).

231030452 is a wasteful number, since it uses less digits than its factorization.

231030452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57757617 (or 57757615 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 231030452 is about 15199.6859178076. The cubic root of 231030452 is about 613.6062048524.

Adding to 231030452 its reverse (254030132), we get a palindrome (485060584).

The spelling of 231030452 in words is "two hundred thirty-one million, thirty thousand, four hundred fifty-two".

Divisors: 1 2 4 57757613 115515226 231030452