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23001312143 = 40956237927
BaseRepresentation
bin10101011010111111…
…000010101110001111
32012101000000201111202
4111122333002232033
5334101313442033
614322221540115
71442664633035
oct253277025617
965330021452
1023001312143
119833706287
12455b11463b
13222742b494
141182b50555
158e94bd8e8
hex55afc2b8f

23001312143 has 4 divisors (see below), whose sum is σ = 23057550480. Its totient is φ = 22945073808.

The previous prime is 23001312121. The next prime is 23001312149. The reversal of 23001312143 is 34121310032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23001312143 - 210 = 23001311119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23001312149) 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, 28118555 + ... + 28119372.

It is an arithmetic number, because the mean of its divisors is an integer number (5764387620).

Almost surely, 223001312143 is an apocalyptic number.

23001312143 is a deficient number, since it is larger than the sum of its proper divisors (56238337).

23001312143 is an equidigital number, since it uses as much as digits as its factorization.

23001312143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56238336.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23001312143 its reverse (34121310032), we get a palindrome (57122622175).

The spelling of 23001312143 in words is "twenty-three billion, one million, three hundred twelve thousand, one hundred forty-three".

Divisors: 1 409 56237927 23001312143