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12310349 = 61201809
BaseRepresentation
bin101110111101…
…011101001101
3212011102121212
4232331131031
511122412344
61115504205
7206431142
oct56753515
925142555
1012310349
116a48a47
124158065
13272033c
1418c63c9
15113279e
hexbbd74d

12310349 has 4 divisors (see below), whose sum is σ = 12512220. Its totient is φ = 12108480.

The previous prime is 12310327. The next prime is 12310357. The reversal of 12310349 is 94301321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94301321 = 351726813.

It can be written as a sum of positive squares in 2 ways, for example, as 2656900 + 9653449 = 1630^2 + 3107^2 .

It is a cyclic number.

It is not a de Polignac number, because 12310349 - 28 = 12310093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310369) 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, 100844 + ... + 100965.

It is an arithmetic number, because the mean of its divisors is an integer number (3128055).

Almost surely, 212310349 is an apocalyptic number.

It is an amenable number.

12310349 is a deficient number, since it is larger than the sum of its proper divisors (201871).

12310349 is an equidigital number, since it uses as much as digits as its factorization.

12310349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201870.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 12310349 is about 3508.6106937077. The cubic root of 12310349 is about 230.8997459802.

The spelling of 12310349 in words is "twelve million, three hundred ten thousand, three hundred forty-nine".

Divisors: 1 61 201809 12310349