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3115212113 = 13241199391
BaseRepresentation
bin1011100110101110…
…0101110101010001
322001002211011122102
42321223211311101
522334443241423
61233041450145
7140124603026
oct27153456521
98032734572
103115212113
111359501a72
1272b340955
133a85230a0
14217a3754d
15133750c28
hexb9ae5d51

3115212113 has 8 divisors (see below), whose sum is σ = 3356269056. Its totient is φ = 2874358800.

The previous prime is 3115212109. The next prime is 3115212143. The reversal of 3115212113 is 3112125113.

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 3115212113 - 22 = 3115212109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3115212143) 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, 18353 + ... + 81038.

It is an arithmetic number, because the mean of its divisors is an integer number (419533632).

Almost surely, 23115212113 is an apocalyptic number.

It is an amenable number.

3115212113 is a deficient number, since it is larger than the sum of its proper divisors (241056943).

3115212113 is a wasteful number, since it uses less digits than its factorization.

3115212113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101815.

The product of its digits is 180, while the sum is 20.

The square root of 3115212113 is about 55814.0852563222. The cubic root of 3115212113 is about 1460.4808750944.

Adding to 3115212113 its reverse (3112125113), we get a palindrome (6227337226).

The spelling of 3115212113 in words is "three billion, one hundred fifteen million, two hundred twelve thousand, one hundred thirteen".

Divisors: 1 13 2411 31343 99391 1292083 239631701 3115212113