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1131001230 = 235193229853
BaseRepresentation
bin100001101101001…
…1011010110001110
32220211011211000110
41003122123112032
54304014014410
6304121140450
740012231452
oct10332332616
92824154013
101131001230
11530469a67
1227692a726
131504165c8
14aa2cc662
156945b720
hex4369b58e

1131001230 has 64 divisors (see below), whose sum is σ = 2743594560. Its totient is φ = 298377216.

The previous prime is 1131001229. The next prime is 1131001271. The reversal of 1131001230 is 321001311.

It is a super-3 number, since 3×11310012303 (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1325484 + ... + 1326336.

It is an arithmetic number, because the mean of its divisors is an integer number (42868665).

Almost surely, 21131001230 is an apocalyptic number.

1131001230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131001230 is an abundant number, since it is smaller than the sum of its proper divisors (1612593330).

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

1131001230 is a wasteful number, since it uses less digits than its factorization.

1131001230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1131001230 is about 33630.3617286523. The cubic root of 1131001230 is about 1041.8879752787.

Adding to 1131001230 its reverse (321001311), we get a palindrome (1452002541).

The spelling of 1131001230 in words is "one billion, one hundred thirty-one million, one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 193 229 386 458 579 687 853 965 1145 1158 1374 1706 1930 2290 2559 2895 3435 4265 5118 5790 6870 8530 12795 25590 44197 88394 132591 164629 195337 220985 265182 329258 390674 441970 493887 586011 662955 823145 976685 987774 1172022 1325910 1646290 1953370 2469435 2930055 4938870 5860110 37700041 75400082 113100123 188500205 226200246 377000410 565500615 1131001230