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23454321 = 31131101227
BaseRepresentation
bin101100101111…
…0001001110001
31122010121021120
41121132021301
522001014241
62154412453
7403233642
oct131361161
948117246
1023454321
111226a640
127a31129
134b227c7
1431876c9
1520d4666
hex165e271

23454321 has 32 divisors (see below), whose sum is σ = 35721216. Its totient is φ = 13560000.

The previous prime is 23454289. The next prime is 23454367. The reversal of 23454321 is 12345432.

23454321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 23454321 - 25 = 23454289 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23454291 and 23454300.

It is not an unprimeable number, because it can be changed into a prime (23454391) 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 31 ways as a sum of consecutive naturals, for example, 103210 + ... + 103436.

It is an arithmetic number, because the mean of its divisors is an integer number (1116288).

Almost surely, 223454321 is an apocalyptic number.

It is an amenable number.

23454321 is a deficient number, since it is larger than the sum of its proper divisors (12266895).

23454321 is a wasteful number, since it uses less digits than its factorization.

23454321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373.

The product of its digits is 2880, while the sum is 24.

The square root of 23454321 is about 4842.9661365737. The cubic root of 23454321 is about 286.2470073357.

Adding to 23454321 its reverse (12345432), we get a palindrome (35799753).

Subtracting from 23454321 its reverse (12345432), we obtain a square (11108889 = 33332).

It can be divided in two parts, 2345 and 4321, that added together give a palindrome (6666).

The spelling of 23454321 in words is "twenty-three million, four hundred fifty-four thousand, three hundred twenty-one".

Divisors: 1 3 11 31 33 93 101 227 303 341 681 1023 1111 2497 3131 3333 7037 7491 9393 21111 22927 34441 68781 77407 103323 232221 252197 710737 756591 2132211 7818107 23454321