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23023020113 = 101221227453
BaseRepresentation
bin10101011100010001…
…110110100001010001
32012102111212121020122
4111130101312201101
5334122343120423
614324315120025
71443350304422
oct253421664121
965374777218
1023023020113
119844992855
124566443015
13222ba8c132
1411859a1649
158eb35a8c8
hex55c476851

23023020113 has 4 divisors (see below), whose sum is σ = 23023348788. Its totient is φ = 23022691440.

The previous prime is 23023020107. The next prime is 23023020127. The reversal of 23023020113 is 31102032032.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6647467024 + 16375553089 = 81532^2 + 127967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23023020113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23023020091 and 23023020100.

It is not an unprimeable number, because it can be changed into a prime (23023020313) 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, 12506 + ... + 214947.

It is an arithmetic number, because the mean of its divisors is an integer number (5755837197).

Almost surely, 223023020113 is an apocalyptic number.

It is an amenable number.

23023020113 is a deficient number, since it is larger than the sum of its proper divisors (328675).

23023020113 is a wasteful number, since it uses less digits than its factorization.

23023020113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328674.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23023020113 its reverse (31102032032), we get a palindrome (54125052145).

The spelling of 23023020113 in words is "twenty-three billion, twenty-three million, twenty thousand, one hundred thirteen".

Divisors: 1 101221 227453 23023020113