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30231103 = 74318729
BaseRepresentation
bin111001101010…
…0101000111111
32002212220021111
41303110220333
530214343403
62555542451
7514650220
oct163245077
962786244
1030231103
1116079091
12a15aa27
136356236
14402d247
1529c256d
hex1cd4a3f

30231103 has 4 divisors (see below), whose sum is σ = 34549840. Its totient is φ = 25912368.

The previous prime is 30231101. The next prime is 30231133. The reversal of 30231103 is 30113203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30113203 = 111726959.

It is a cyclic number.

It is not a de Polignac number, because 30231103 - 21 = 30231101 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 (30231101) 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, 2159358 + ... + 2159371.

It is an arithmetic number, because the mean of its divisors is an integer number (8637460).

Almost surely, 230231103 is an apocalyptic number.

30231103 is a deficient number, since it is larger than the sum of its proper divisors (4318737).

30231103 is an equidigital number, since it uses as much as digits as its factorization.

30231103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318736.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30231103 is about 5498.2818225333. The cubic root of 30231103 is about 311.5190891326.

Adding to 30231103 its reverse (30113203), we get a palindrome (60344306).

The spelling of 30231103 in words is "thirty million, two hundred thirty-one thousand, one hundred three".

Divisors: 1 7 4318729 30231103