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23300011021 = 721094362481
BaseRepresentation
bin10101101100110010…
…011111010000001101
32020010211002012100011
4111230302133100031
5340204300323041
614412012033221
71453252553200
oct255462372015
966124065304
1023300011021
119977281161
124623162811
132274291c91
1411b06a5937
15915821e81
hex56cc9f40d

23300011021 has 12 divisors (see below), whose sum is σ = 27352762140. Its totient is φ = 19788209280.

The previous prime is 23300010971. The next prime is 23300011067. The reversal of 23300011021 is 12011000332.

It can be written as a sum of positive squares in 2 ways, for example, as 8379388521 + 14920622500 = 91539^2 + 122150^2 .

It is not a de Polignac number, because 23300011021 - 27 = 23300010893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23300010992 and 23300011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23300011121) 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, 2175900 + ... + 2186581.

It is an arithmetic number, because the mean of its divisors is an integer number (2279396845).

Almost surely, 223300011021 is an apocalyptic number.

It is an amenable number.

23300011021 is a deficient number, since it is larger than the sum of its proper divisors (4052751119).

23300011021 is a wasteful number, since it uses less digits than its factorization.

23300011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362604 (or 4362597 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 23300011021 its reverse (12011000332), we get a palindrome (35311011353).

The spelling of 23300011021 in words is "twenty-three billion, three hundred million, eleven thousand, twenty-one".

Divisors: 1 7 49 109 763 5341 4362481 30537367 213761569 475510429 3328573003 23300011021