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87203230269 = 329067743423
BaseRepresentation
bin101000100110110110…
…1111011001000111101
322100002100021002022020
41101031231323020331
52412043011332034
6104021031510353
76204656140641
oct1211555731075
9270070232266
1087203230269
1133a89a4a651
1214a982283b9
1382b958644c
1443136b8c21
152405a7e249
hex144db7b23d

87203230269 has 4 divisors (see below), whose sum is σ = 116270973696. Its totient is φ = 58135486844.

The previous prime is 87203230253. The next prime is 87203230363. The reversal of 87203230269 is 96203230278.

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 87203230269 - 24 = 87203230253 is a prime.

It is a super-2 number, since 2×872032302692 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87203230269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87203230069) 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, 14533871709 + ... + 14533871714.

It is an arithmetic number, because the mean of its divisors is an integer number (29067743424).

Almost surely, 287203230269 is an apocalyptic number.

It is an amenable number.

87203230269 is a deficient number, since it is larger than the sum of its proper divisors (29067743427).

87203230269 is a wasteful number, since it uses less digits than its factorization.

87203230269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29067743426.

The product of its (nonzero) digits is 217728, while the sum is 42.

Subtracting 87203230269 from its reverse (96203230278), we obtain a palindrome (9000000009).

The spelling of 87203230269 in words is "eighty-seven billion, two hundred three million, two hundred thirty thousand, two hundred sixty-nine".

Divisors: 1 3 29067743423 87203230269