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23103100 = 2252231031
BaseRepresentation
bin101100000100…
…0011001111100
31121110202111101
41120020121330
521403244400
62143102444
7400241656
oct130103174
947422441
1023103100
111204a779
1278a1a24
134a2b997
1430d56d6
15206556a
hex160867c

23103100 has 18 divisors (see below), whose sum is σ = 50133944. Its totient is φ = 9241200.

The previous prime is 23103097. The next prime is 23103103. The reversal of 23103100 is 130132.

It is an interprime number because it is at equal distance from previous prime (23103097) and next prime (23103103).

It is a super-2 number, since 2×231031002 = 1067506459220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23103103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115416 + ... + 115615.

Almost surely, 223103100 is an apocalyptic number.

23103100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23103100 is an abundant number, since it is smaller than the sum of its proper divisors (27030844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23103100 is a wasteful number, since it uses less digits than its factorization.

23103100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231045 (or 231038 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 23103100 is about 4806.5684224819. The cubic root of 23103100 is about 284.8109960563.

Adding to 23103100 its reverse (130132), we get a palindrome (23233232).

The spelling of 23103100 in words is "twenty-three million, one hundred three thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 231031 462062 924124 1155155 2310310 4620620 5775775 11551550 23103100