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135430253 = 779244901
BaseRepresentation
bin10000001001010…
…00000001101101
3100102211120101022
420010220001231
5234132232003
621234423525
73233065250
oct1004500155
9312746338
10135430253
116a4a0832
1239431ba5
132209a35a
1413db5097
15bd52738
hex812806d

135430253 has 8 divisors (see below), whose sum is σ = 156737280. Its totient is φ = 114613200.

The previous prime is 135430231. The next prime is 135430277. The reversal of 135430253 is 352034531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135430253 - 28 = 135429997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135438253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121898 + ... + 123003.

It is an arithmetic number, because the mean of its divisors is an integer number (19592160).

Almost surely, 2135430253 is an apocalyptic number.

It is an amenable number.

135430253 is a deficient number, since it is larger than the sum of its proper divisors (21307027).

135430253 is an equidigital number, since it uses as much as digits as its factorization.

135430253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244987.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 135430253 is about 11637.4504510223. The cubic root of 135430253 is about 513.5371855327.

Adding to 135430253 its reverse (352034531), we get a palindrome (487464784).

The spelling of 135430253 in words is "one hundred thirty-five million, four hundred thirty thousand, two hundred fifty-three".

Divisors: 1 7 79 553 244901 1714307 19347179 135430253