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260630131 = 277940903
BaseRepresentation
bin11111000100011…
…10011001110011
3200011102101022211
433202032121303
51013210131011
641510112551
76313214416
oct1742163163
9604371284
10260630131
11124134303
127334b757
1341cc5018
1426885b7d
1517d33b21
hexf88e673

260630131 has 4 divisors (see below), whose sum is σ = 261571312. Its totient is φ = 259688952.

The previous prime is 260630099. The next prime is 260630141. The reversal of 260630131 is 131036062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 260630131 - 25 = 260630099 is a prime.

It is a super-2 number, since 2×2606301312 = 135856130370154322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260630141) 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, 470175 + ... + 470728.

It is an arithmetic number, because the mean of its divisors is an integer number (65392828).

Almost surely, 2260630131 is an apocalyptic number.

260630131 is a deficient number, since it is larger than the sum of its proper divisors (941181).

260630131 is an equidigital number, since it uses as much as digits as its factorization.

260630131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941180.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 260630131 is about 16144.0432048480. The cubic root of 260630131 is about 638.7656310553.

Adding to 260630131 its reverse (131036062), we get a palindrome (391666193).

The spelling of 260630131 in words is "two hundred sixty million, six hundred thirty thousand, one hundred thirty-one".

Divisors: 1 277 940903 260630131