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23913043 = 711310559
BaseRepresentation
bin101101100111…
…0001001010011
31122222220112021
41123032021103
522110204133
62212312311
7410154220
oct133161123
948886467
1023913043
1112553250
128012697
134c5353b
143266947
15217552d
hex16ce253

23913043 has 8 divisors (see below), whose sum is σ = 29813760. Its totient is φ = 18633480.

The previous prime is 23913041. The next prime is 23913049. The reversal of 23913043 is 34031932.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23913043 - 21 = 23913041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23912999 and 23913017.

It is not an unprimeable number, because it can be changed into a prime (23913041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155203 + ... + 155356.

It is an arithmetic number, because the mean of its divisors is an integer number (3726720).

Almost surely, 223913043 is an apocalyptic number.

23913043 is a deficient number, since it is larger than the sum of its proper divisors (5900717).

23913043 is a wasteful number, since it uses less digits than its factorization.

23913043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310577.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 23913043 is about 4890.0964203173. The cubic root of 23913043 is about 288.1011210944.

Adding to 23913043 its reverse (34031932), we get a palindrome (57944975).

The spelling of 23913043 in words is "twenty-three million, nine hundred thirteen thousand, forty-three".

Divisors: 1 7 11 77 310559 2173913 3416149 23913043