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1231130230 = 2511237107257
BaseRepresentation
bin100100101100001…
…1000111001110110
310011210120220011221
41021120120321312
510010132131410
6322055220554
742336301651
oct11130307166
93153526157
101231130230
11581a39400
122a437775a
131680a3a35
14b9714898
15731394da
hex49618e76

1231130230 has 96 divisors (see below), whose sum is σ = 2534843808. Its totient is φ = 429834240.

The previous prime is 1231130227. The next prime is 1231130237. The reversal of 1231130230 is 320311321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231130237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4790262 + ... + 4790518.

It is an arithmetic number, because the mean of its divisors is an integer number (26404623).

Almost surely, 21231130230 is an apocalyptic number.

1231130230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231130230 is an abundant number, since it is smaller than the sum of its proper divisors (1303713578).

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

1231130230 is a wasteful number, since it uses less digits than its factorization.

1231130230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1231130230 is about 35087.4654257044. The cubic root of 1231130230 is about 1071.7693467475.

Adding to 1231130230 its reverse (320311321), we get a palindrome (1551441551).

The spelling of 1231130230 in words is "one billion, two hundred thirty-one million, one hundred thirty thousand, two hundred thirty".

Divisors: 1 2 5 10 11 22 37 55 74 107 110 121 185 214 242 257 370 407 514 535 605 814 1070 1177 1210 1285 2035 2354 2570 2827 3959 4070 4477 5654 5885 7918 8954 9509 11770 12947 14135 19018 19795 22385 25894 27499 28270 31097 39590 43549 44770 47545 54998 62194 64735 87098 95090 104599 129470 137495 155485 209198 217745 274990 302489 310970 435490 479039 522995 604978 958078 1017463 1045990 1150589 1512445 2034926 2301178 2395195 3024890 3327379 4790390 5087315 5752945 6654758 10174630 11192093 11505890 16636895 22384186 33273790 55960465 111920930 123113023 246226046 615565115 1231130230