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23430211 = 7191131559
BaseRepresentation
bin101100101100…
…0010001000011
31122002101012121
41121120101003
521444231321
62154105111
7403103440
oct131302103
948071177
1023430211
1112253512
127a1b197
134b1483c
14317c9c7
1520cc441
hex1658443

23430211 has 16 divisors (see below), whose sum is σ = 28454400. Its totient is φ = 18845568.

The previous prime is 23430191. The next prime is 23430221. The reversal of 23430211 is 11203432.

It is a happy number.

It is not a de Polignac number, because 23430211 - 25 = 23430179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23430221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14250 + ... + 15808.

It is an arithmetic number, because the mean of its divisors is an integer number (1778400).

Almost surely, 223430211 is an apocalyptic number.

23430211 is a deficient number, since it is larger than the sum of its proper divisors (5024189).

23430211 is a wasteful number, since it uses less digits than its factorization.

23430211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23430211 is about 4840.4763195372. The cubic root of 23430211 is about 286.1488906393.

Adding to 23430211 its reverse (11203432), we get a palindrome (34633643).

The spelling of 23430211 in words is "twenty-three million, four hundred thirty thousand, two hundred eleven".

Divisors: 1 7 19 113 133 791 1559 2147 10913 15029 29621 176167 207347 1233169 3347173 23430211