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23120331300020 = 2251156016565001
BaseRepresentation
bin1010100000111000111110…
…01000100101110010110100
310000212021121122022011210102
411100130133020211302310
511012300414303100040
6121101200015013232
74604250235322453
oct520343710456264
9100767548264712
1023120331300020
1174043063004a9
122714a6020a218
13cb93128376c6
1459d05c49ab9a
152a162d6c3515
hex15071f225cb4

23120331300020 has 12 divisors (see below), whose sum is σ = 48552695730084. Its totient is φ = 9248132520000.

The previous prime is 23120331300013. The next prime is 23120331300023. The reversal of 23120331300020 is 2000313302132.

It can be written as a sum of positive squares in 2 ways, for example, as 5729646494224 + 17390684805796 = 2393668^2 + 4170214^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1156016565001 = 23120331300020 / (2 + 3 + 1 + 2 + 0 + 3 + 3 + 1 + 3 + 0 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 23120331299965 and 23120331300001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120331300023) 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, 578008282481 + ... + 578008282520.

It is an arithmetic number, because the mean of its divisors is an integer number (4046057977507).

Almost surely, 223120331300020 is an apocalyptic number.

23120331300020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23120331300020 is an abundant number, since it is smaller than the sum of its proper divisors (25432364430064).

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

23120331300020 is a wasteful number, since it uses less digits than its factorization.

23120331300020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156016565010 (or 1156016565008 counting only the distinct ones).

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

Adding to 23120331300020 its reverse (2000313302132), we get a palindrome (25120644602152).

The spelling of 23120331300020 in words is "twenty-three trillion, one hundred twenty billion, three hundred thirty-one million, three hundred thousand, twenty".

Divisors: 1 2 4 5 10 20 1156016565001 2312033130002 4624066260004 5780082825005 11560165650010 23120331300020