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23131112303 = 133312231523
BaseRepresentation
bin10101100010101110…
…001100001101101111
32012201001021020212002
4111202232030031233
5334333031043203
614343140002515
71446132132125
oct254256141557
965631236762
1023131112303
11989aa01042
12459669043b
1322482a7000
14119609b915
15905aacd88
hex562b8c36f

23131112303 has 32 divisors (see below), whose sum is σ = 25999196160. Its totient is φ = 20556862560.

The previous prime is 23131112299. The next prime is 23131112321. The reversal of 23131112303 is 30321113132.

It is not a de Polignac number, because 23131112303 - 22 = 23131112299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131112003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15187100 + ... + 15188622.

It is an arithmetic number, because the mean of its divisors is an integer number (812474880).

Almost surely, 223131112303 is an apocalyptic number.

23131112303 is a deficient number, since it is larger than the sum of its proper divisors (2868083857).

23131112303 is a wasteful number, since it uses less digits than its factorization.

23131112303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 23131112303 its reverse (30321113132), we get a palindrome (53452225435).

The spelling of 23131112303 in words is "twenty-three billion, one hundred thirty-one million, one hundred twelve thousand, three hundred three".

Divisors: 1 13 31 169 223 403 1523 2197 2899 5239 6913 19799 37687 47213 68107 89869 257387 339629 489931 613769 1168297 3346031 4415177 7978997 10528499 15187861 57397301 103726961 136870487 746164913 1779316331 23131112303