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23001312111 = 318731409327
BaseRepresentation
bin10101011010111111…
…000010101101101111
32012101000000201110120
4111122333002231233
5334101313441421
614322221540023
71442664632661
oct253277025557
965330021416
1023001312111
119833706258
12455b114613
13222742b46b
141182b50531
158e94bd8c6
hex55afc2b6f

23001312111 has 8 divisors (see below), whose sum is σ = 30670128384. Its totient is φ = 15333351960.

The previous prime is 23001312023. The next prime is 23001312121. The reversal of 23001312111 is 11121310032.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23001312111 - 214 = 23001295727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23001312121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148471 + ... + 260856.

It is an arithmetic number, because the mean of its divisors is an integer number (3833766048).

Almost surely, 223001312111 is an apocalyptic number.

23001312111 is a deficient number, since it is larger than the sum of its proper divisors (7668816273).

23001312111 is a wasteful number, since it uses less digits than its factorization.

23001312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428061.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 23001312111 its reverse (11121310032), we get a palindrome (34122622143).

The spelling of 23001312111 in words is "twenty-three billion, one million, three hundred twelve thousand, one hundred eleven".

Divisors: 1 3 18731 56193 409327 1227981 7667104037 23001312111