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23231210013 = 3211234658687
BaseRepresentation
bin10101101000101100…
…000010001000011101
32012222000121202002200
4111220230002020131
5340034142210023
614401113242113
71451456012154
oct255054021035
965860552080
1023231210013
119941459a20
124604103339
132262c5311b
1411a54b659b
1590e781743
hex568b0221d

23231210013 has 12 divisors (see below), whose sum is σ = 36606755328. Its totient is φ = 14079521160.

The previous prime is 23231209949. The next prime is 23231210021. The reversal of 23231210013 is 31001213232.

It is not a de Polignac number, because 23231210013 - 26 = 23231209949 is a prime.

It is a super-2 number, since 2×232312100132 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231210113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117329245 + ... + 117329442.

It is an arithmetic number, because the mean of its divisors is an integer number (3050562944).

Almost surely, 223231210013 is an apocalyptic number.

It is an amenable number.

23231210013 is a deficient number, since it is larger than the sum of its proper divisors (13375545315).

23231210013 is a wasteful number, since it uses less digits than its factorization.

23231210013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234658704 (or 234658701 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23231210013 its reverse (31001213232), we get a palindrome (54232423245).

The spelling of 23231210013 in words is "twenty-three billion, two hundred thirty-one million, two hundred ten thousand, thirteen".

Divisors: 1 3 9 11 33 99 234658687 703976061 2111928183 2581245557 7743736671 23231210013