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2315047661 = 6190741843
BaseRepresentation
bin1000100111111100…
…1101001011101101
312222100011121100222
42021333031023231
514220123011121
61021415301125
7111240403043
oct21177151355
95870147328
102315047661
11a88869633
1254737a7a5
132ab8133b4
1417d668393
15d83950ab
hex89fcd2ed

2315047661 has 8 divisors (see below), whose sum is σ = 2355649824. Its totient is φ = 2274531120.

The previous prime is 2315047649. The next prime is 2315047663. The reversal of 2315047661 is 1667405132.

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

It is a cyclic number.

It is not a de Polignac number, because 2315047661 - 210 = 2315046637 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 (2315047663) 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 7 ways as a sum of consecutive naturals, for example, 34406 + ... + 76248.

It is an arithmetic number, because the mean of its divisors is an integer number (294456228).

Almost surely, 22315047661 is an apocalyptic number.

It is an amenable number.

2315047661 is a deficient number, since it is larger than the sum of its proper divisors (40602163).

2315047661 is an equidigital number, since it uses as much as digits as its factorization.

2315047661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42811.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 2315047661 is about 48114.9421801585. The cubic root of 2315047661 is about 1322.8785629199.

The spelling of 2315047661 in words is "two billion, three hundred fifteen million, forty-seven thousand, six hundred sixty-one".

Divisors: 1 61 907 41843 55327 2552423 37951601 2315047661