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214312313657 = 1317099646321
BaseRepresentation
bin1100011110011000000…
…0100110001100111001
3202111011210102112212102
43013212000212030321
512002402423014112
6242242000353145
721324600415661
oct3074600461471
9674153375772
10214312313657
11829867942a2
12356509157b5
131729554a820
14a530c551a1
155894be9bc2
hex31e6026339

214312313657 has 8 divisors (see below), whose sum is σ = 230932948680. Its totient is φ = 197710974720.

The previous prime is 214312313623. The next prime is 214312313701. The reversal of 214312313657 is 756313213412.

It can be written as a sum of positive squares in 4 ways, for example, as 9238285456 + 205074028201 = 96116^2 + 452851^2 .

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 214312313657 - 214 = 214312297273 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 214312313657.

It is not an unprimeable number, because it can be changed into a prime (214312313057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4800944 + ... + 4845377.

It is an arithmetic number, because the mean of its divisors is an integer number (28866618585).

Almost surely, 2214312313657 is an apocalyptic number.

It is an amenable number.

214312313657 is a deficient number, since it is larger than the sum of its proper divisors (16620635023).

214312313657 is a wasteful number, since it uses less digits than its factorization.

214312313657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9648043.

The product of its digits is 90720, while the sum is 38.

The spelling of 214312313657 in words is "two hundred fourteen billion, three hundred twelve million, three hundred thirteen thousand, six hundred fifty-seven".

Divisors: 1 13 1709 22217 9646321 125402173 16485562589 214312313657