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12310057 = 17724121
BaseRepresentation
bin101110111101…
…011000101001
3212011102020001
4232331120221
511122410212
61115503001
7206430244
oct56753051
925142201
1012310057
116a48801
124157a61
132720176
1418c625b
151132657
hexbbd629

12310057 has 4 divisors (see below), whose sum is σ = 13034196. Its totient is φ = 11585920.

The previous prime is 12310033. The next prime is 12310073. The reversal of 12310057 is 75001321.

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 10086976 + 2223081 = 3176^2 + 1491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12310057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12310027) 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, 362044 + ... + 362077.

It is an arithmetic number, because the mean of its divisors is an integer number (3258549).

Almost surely, 212310057 is an apocalyptic number.

12310057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12310057 is a deficient number, since it is larger than the sum of its proper divisors (724139).

12310057 is an equidigital number, since it uses as much as digits as its factorization.

12310057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724138.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 12310057 is about 3508.5690815488. The cubic root of 12310057 is about 230.8979203277.

Adding to 12310057 its reverse (75001321), we get a palindrome (87311378).

The spelling of 12310057 in words is "twelve million, three hundred ten thousand, fifty-seven".

Divisors: 1 17 724121 12310057