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20231331230 = 2511283364921
BaseRepresentation
bin10010110101111000…
…011001110110011110
31221012221211010001002
4102311320121312132
5312413210044410
613143311350302
71314231322655
oct226570316636
957187733032
1020231331230
118642071660
123b07522392
131ba55b1b16
14d9cd0219c
157d62137a5
hex4b5e19d9e

20231331230 has 32 divisors (see below), whose sum is σ = 39741612768. Its totient is φ = 7354137600.

The previous prime is 20231331229. The next prime is 20231331251. The reversal of 20231331230 is 3213313202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279170 + ... + 344090.

It is an arithmetic number, because the mean of its divisors is an integer number (1241925399).

Almost surely, 220231331230 is an apocalyptic number.

20231331230 is a deficient number, since it is larger than the sum of its proper divisors (19510281538).

20231331230 is a wasteful number, since it uses less digits than its factorization.

20231331230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67772.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20231331230 its reverse (3213313202), we get a palindrome (23444644432).

The spelling of 20231331230 in words is "twenty billion, two hundred thirty-one million, three hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 2833 5666 14165 28330 31163 62326 64921 129842 155815 311630 324605 649210 714131 1428262 3570655 7141310 183921193 367842386 919605965 1839211930 2023133123 4046266246 10115665615 20231331230