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1331233230 = 23544374441
BaseRepresentation
bin100111101011001…
…0000000111001110
310102202221122200110
41033112100013032
510211243430410
6340032540450
744663203305
oct11726200716
93382848613
101331233230
116234a0258
123119b1726
13182a52392
14c8b3143c
157bd0e720
hex4f5901ce

1331233230 has 16 divisors (see below), whose sum is σ = 3194959824. Its totient is φ = 354995520.

The previous prime is 1331233207. The next prime is 1331233237. The reversal of 1331233230 is 323321331.

It is a junction number, because it is equal to n+sod(n) for n = 1331233197 and 1331233206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331233237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22187191 + ... + 22187250.

It is an arithmetic number, because the mean of its divisors is an integer number (199684989).

Almost surely, 21331233230 is an apocalyptic number.

1331233230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331233230 is an abundant number, since it is smaller than the sum of its proper divisors (1863726594).

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

1331233230 is a wasteful number, since it uses less digits than its factorization.

1331233230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44374451.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 1331233230 is about 36486.0689852990. The cubic root of 1331233230 is about 1100.0642469362.

Adding to 1331233230 its reverse (323321331), we get a palindrome (1654554561).

The spelling of 1331233230 in words is "one billion, three hundred thirty-one million, two hundred thirty-three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 44374441 88748882 133123323 221872205 266246646 443744410 665616615 1331233230