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253142213 = 1391821167
BaseRepresentation
bin11110001011010…
…10010011000101
3122122022221211112
433011222103011
51004301022323
641041414405
76162446642
oct1705522305
9578287745
10253142213
1111a98a545
127093a405
13405a29bc
1425896dc9
1517355178
hexf16a4c5

253142213 has 4 divisors (see below), whose sum is σ = 254963520. Its totient is φ = 251320908.

The previous prime is 253142203. The next prime is 253142221. The reversal of 253142213 is 312241352.

253142213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253142213 - 212 = 253138117 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 (253142203) 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, 910445 + ... + 910722.

It is an arithmetic number, because the mean of its divisors is an integer number (63740880).

Almost surely, 2253142213 is an apocalyptic number.

It is an amenable number.

253142213 is a deficient number, since it is larger than the sum of its proper divisors (1821307).

253142213 is a wasteful number, since it uses less digits than its factorization.

253142213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821306.

The product of its digits is 1440, while the sum is 23.

The square root of 253142213 is about 15910.4435199023. The cubic root of 253142213 is about 632.5888374231.

Adding to 253142213 its reverse (312241352), we get a palindrome (565383565).

It can be divided in two parts, 2531 and 42213, that added together give a palindrome (44744).

The spelling of 253142213 in words is "two hundred fifty-three million, one hundred forty-two thousand, two hundred thirteen".

Divisors: 1 139 1821167 253142213