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23231310130000 = 245472317149561
BaseRepresentation
bin1010100100000111101011…
…11111001110101101010000
310001020220001221112212110201
411102003311333032231100
511021110210343130000
6121224152212304544
74615256343652600
oct522036577165520
9101226057485421
1023231310130000
117447385a25005
122732472912154
13cc691aa6b93b
145a458967ac00
152a44766b996a
hex1520f5fceb50

23231310130000 has 300 divisors, whose sum is σ = 65635072219332. Its totient is φ = 7939841280000.

The previous prime is 23231310129971. The next prime is 23231310130043. The reversal of 23231310130000 is 3101313232.

It can be written as a sum of positive squares in 10 ways, for example, as 23092022933056 + 139287196944 = 4805416^2 + 373212^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23231310130000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 155255220 + ... + 155404780.

Almost surely, 223231310130000 is an apocalyptic number.

23231310130000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23231310130000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32817536109666).

23231310130000 is an abundant number, since it is smaller than the sum of its proper divisors (42403762089332).

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

23231310130000 is a wasteful number, since it uses less digits than its factorization.

23231310130000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149920 (or 149892 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23231310130000 its reverse (3101313232), we get a palindrome (23234411443232).

The spelling of 23231310130000 in words is "twenty-three trillion, two hundred thirty-one billion, three hundred ten million, one hundred thirty thousand".