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253103213 = 11296113007
BaseRepresentation
bin11110001011000…
…00110001101101
3122122020222100002
433011200301231
51004243300323
641040514045
76162225146
oct1705406155
9578228302
10253103213
1111a963210
127091b925
134058b01c
1425886acd
1517348828
hexf160c6d

253103213 has 16 divisors (see below), whose sum is σ = 290338560. Its totient is φ = 218500800.

The previous prime is 253103183. The next prime is 253103219. The reversal of 253103213 is 312301352.

253103213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 253103213 - 212 = 253099117 is a prime.

It is a super-2 number, since 2×2531032132 = 128122472861846738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253103219) 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, 12956 + ... + 25962.

It is an arithmetic number, because the mean of its divisors is an integer number (18146160).

Almost surely, 2253103213 is an apocalyptic number.

It is an amenable number.

253103213 is a deficient number, since it is larger than the sum of its proper divisors (37235347).

253103213 is a wasteful number, since it uses less digits than its factorization.

253103213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13108.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 253103213 is about 15909.2178626103. The cubic root of 253103213 is about 632.5563494507.

Adding to 253103213 its reverse (312301352), we get a palindrome (565404565).

The spelling of 253103213 in words is "two hundred fifty-three million, one hundred three thousand, two hundred thirteen".

Divisors: 1 11 29 61 319 671 1769 13007 19459 143077 377203 793427 4149233 8727697 23009383 253103213