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12308061 = 34102687
BaseRepresentation
bin101110111100…
…111001011101
3212011022111010
4232330321131
511122324221
61115445433
7206421363
oct56747135
925138433
1012308061
116a47257
124156879
13271c29c
1418c5633
151131c76
hexbbce5d

12308061 has 4 divisors (see below), whose sum is σ = 16410752. Its totient is φ = 8205372.

The previous prime is 12308057. The next prime is 12308069. The reversal of 12308061 is 16080321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12308061 - 22 = 12308057 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 (12308069) 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, 2051341 + ... + 2051346.

It is an arithmetic number, because the mean of its divisors is an integer number (4102688).

Almost surely, 212308061 is an apocalyptic number.

It is an amenable number.

12308061 is a deficient number, since it is larger than the sum of its proper divisors (4102691).

12308061 is an equidigital number, since it uses as much as digits as its factorization.

12308061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102690.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12308061 is about 3508.2846235732. The cubic root of 12308061 is about 230.8854400941.

Adding to 12308061 its reverse (16080321), we get a palindrome (28388382).

The spelling of 12308061 in words is "twelve million, three hundred eight thousand, sixty-one".

Divisors: 1 3 4102687 12308061