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23331012310420 = 2251166550615521
BaseRepresentation
bin1010100111000001011001…
…01100110111010110010100
310001121102102100210102001121
411103200230230313112110
511024223403122413140
6121342041420133324
74625416143342463
oct523405454672624
9101542370712047
1023331012310420
117485699235921
122749858997244
131003149964b79
145a9326d349da
152a6d5e6c664a
hex15382cb37594

23331012310420 has 12 divisors (see below), whose sum is σ = 48995125851924. Its totient is φ = 9332404924160.

The previous prime is 23331012310343. The next prime is 23331012310423. The reversal of 23331012310420 is 2401321013332.

It can be written as a sum of positive squares in 2 ways, for example, as 6983821006864 + 16347191303556 = 2642692^2 + 4043166^2 .

It is a super-2 number, since 2×233310123104202 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23331012310423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583275307741 + ... + 583275307780.

It is an arithmetic number, because the mean of its divisors is an integer number (4082927154327).

Almost surely, 223331012310420 is an apocalyptic number.

23331012310420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23331012310420 is an abundant number, since it is smaller than the sum of its proper divisors (25664113541504).

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

23331012310420 is a wasteful number, since it uses less digits than its factorization.

23331012310420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166550615530 (or 1166550615528 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 23331012310420 its reverse (2401321013332), we get a palindrome (25732333323752).

The spelling of 23331012310420 in words is "twenty-three trillion, three hundred thirty-one billion, twelve million, three hundred ten thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 1166550615521 2333101231042 4666202462084 5832753077605 11665506155210 23331012310420