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23133131230 = 25115917919913
BaseRepresentation
bin10101100010110101…
…111001000111011110
32012201012001211022011
4111202311321013132
5334334040144410
614343251141434
71446155241166
oct254265710736
965635054264
1023133131230
1198a105a980
1245972a487a
132248832c41
1411964655a6
15905d5b18a
hex562d791de

23133131230 has 64 divisors (see below), whose sum is σ = 46455379200. Its totient is φ = 8222859520.

The previous prime is 23133131227. The next prime is 23133131239. The reversal of 23133131230 is 3213133132.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23133131239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1151754 + ... + 1171666.

It is an arithmetic number, because the mean of its divisors is an integer number (725865300).

Almost surely, 223133131230 is an apocalyptic number.

23133131230 is an abundant number, since it is smaller than the sum of its proper divisors (23322247970).

23133131230 is a wasteful number, since it uses less digits than its factorization.

23133131230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20169.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 23133131230 its reverse (3213133132), we get a palindrome (26346264362).

The spelling of 23133131230 in words is "twenty-three billion, one hundred thirty-three million, one hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 11 22 55 59 110 118 179 295 358 590 649 895 1298 1790 1969 3245 3938 6490 9845 10561 19690 19913 21122 39826 52805 99565 105610 116171 199130 219043 232342 438086 580855 1095215 1161710 1174867 2190430 2349734 3564427 5874335 7128854 11748670 12923537 17822135 25847074 35644270 39208697 64617685 78417394 129235370 196043485 210301193 392086970 420602386 1051505965 2103011930 2313313123 4626626246 11566565615 23133131230