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23130325 = 523532621
BaseRepresentation
bin101100000111…
…1000011010101
31121112010211201
41120033003111
521410132300
62143432501
7400414231
oct130170325
947463751
1023130325
1112069179
1278b5731
134a3b1aa
1431015c1
15206d66a
hex160f0d5

23130325 has 12 divisors (see below), whose sum is σ = 28773828. Its totient is φ = 18444800.

The previous prime is 23130323. The next prime is 23130347. The reversal of 23130325 is 52303132.

It can be written as a sum of positive squares in 6 ways, for example, as 3844 + 23126481 = 62^2 + 4809^2 .

It is not a de Polignac number, because 23130325 - 21 = 23130323 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 (23130323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7515 + ... + 10135.

It is an arithmetic number, because the mean of its divisors is an integer number (2397819).

Almost surely, 223130325 is an apocalyptic number.

23130325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23130325 is a deficient number, since it is larger than the sum of its proper divisors (5643503).

23130325 is a wasteful number, since it uses less digits than its factorization.

23130325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 23130325 is about 4809.3996506841. The cubic root of 23130325 is about 284.9228271607.

Adding to 23130325 its reverse (52303132), we get a palindrome (75433457).

The spelling of 23130325 in words is "twenty-three million, one hundred thirty thousand, three hundred twenty-five".

Divisors: 1 5 25 353 1765 2621 8825 13105 65525 925213 4626065 23130325