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231024749 is a prime number
BaseRepresentation
bin11011100010100…
…10100001101101
3121002201021101012
431301102201231
5433120242444
634531355005
75503451354
oct1561224155
9532637335
10231024749
1110945334a
1265452a65
1338b2a847
142297a99b
1515436b9e
hexdc5286d

231024749 has 2 divisors, whose sum is σ = 231024750. Its totient is φ = 231024748.

The previous prime is 231024727. The next prime is 231024763. The reversal of 231024749 is 947420132.

231024749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177369124 + 53655625 = 13318^2 + 7325^2 .

It is a cyclic number.

It is not a de Polignac number, because 231024749 - 212 = 231020653 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231024799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115512374 + 115512375.

It is an arithmetic number, because the mean of its divisors is an integer number (115512375).

Almost surely, 2231024749 is an apocalyptic number.

It is an amenable number.

231024749 is a deficient number, since it is larger than the sum of its proper divisors (1).

231024749 is an equidigital number, since it uses as much as digits as its factorization.

231024749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 231024749 is about 15199.4983140892. The cubic root of 231024749 is about 613.6011558427.

The spelling of 231024749 in words is "two hundred thirty-one million, twenty-four thousand, seven hundred forty-nine".