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231323044 = 22311185951
BaseRepresentation
bin11011100100110…
…11010110100100
3121010021102120011
431302123112210
5433204314134
634542020004
75506133131
oct1562332644
9533242504
10231323044
11109637477
1265577604
1338c03554
1422a17588
1515495264
hexdc9b5a4

231323044 has 12 divisors (see below), whose sum is σ = 406119168. Its totient is φ = 115289000.

The previous prime is 231323021. The next prime is 231323069. The reversal of 231323044 is 440323132.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91732 + ... + 94219.

It is an arithmetic number, because the mean of its divisors is an integer number (33843264).

Almost surely, 2231323044 is an apocalyptic number.

It is an amenable number.

231323044 is a deficient number, since it is larger than the sum of its proper divisors (174796124).

231323044 is a wasteful number, since it uses less digits than its factorization.

231323044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186266 (or 186264 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 231323044 is about 15209.3078080496. The cubic root of 231323044 is about 613.8651325194.

Adding to 231323044 its reverse (440323132), we get a palindrome (671646176).

The spelling of 231323044 in words is "two hundred thirty-one million, three hundred twenty-three thousand, forty-four".

Divisors: 1 2 4 311 622 1244 185951 371902 743804 57830761 115661522 231323044