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3105863461 = 28729108109
BaseRepresentation
bin1011100100011111…
…1011011100100101
322000110020012201001
42321013323130211
522330100112321
61232105233301
7136652255341
oct27107733445
98013205631
103105863461
1113541a7208
12728192831
133a65cbb3c
142166c2621
15132a05c91
hexb91fb725

3105863461 has 4 divisors (see below), whose sum is σ = 3106000300. Its totient is φ = 3105726624.

The previous prime is 3105863459. The next prime is 3105863473. The reversal of 3105863461 is 1643685013.

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

It can be written as a sum of positive squares in 2 ways, for example, as 515562436 + 2590301025 = 22706^2 + 50895^2 .

It is a cyclic number.

It is not a de Polignac number, because 3105863461 - 21 = 3105863459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3105863461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3105863561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25326 + ... + 82783.

It is an arithmetic number, because the mean of its divisors is an integer number (776500075).

Almost surely, 23105863461 is an apocalyptic number.

It is an amenable number.

3105863461 is a deficient number, since it is larger than the sum of its proper divisors (136839).

3105863461 is a wasteful number, since it uses less digits than its factorization.

3105863461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136838.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 3105863461 is about 55730.2741873750. The cubic root of 3105863461 is about 1459.0184590847.

The spelling of 3105863461 in words is "three billion, one hundred five million, eight hundred sixty-three thousand, four hundred sixty-one".

Divisors: 1 28729 108109 3105863461