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12313541 = 31397211
BaseRepresentation
bin101110111110…
…001111000101
3212011121000002
4232332033011
511123013131
61115531045
7206443352
oct56761705
925147002
1012313541
116a50389
124159a85
132721926
1418c7629
1511336cb
hexbbe3c5

12313541 has 4 divisors (see below), whose sum is σ = 12710784. Its totient is φ = 11916300.

The previous prime is 12313537. The next prime is 12313549. The reversal of 12313541 is 14531321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14531321 = 72075903.

It is a cyclic number.

It is not a de Polignac number, because 12313541 - 22 = 12313537 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 (12313549) 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, 198575 + ... + 198636.

It is an arithmetic number, because the mean of its divisors is an integer number (3177696).

Almost surely, 212313541 is an apocalyptic number.

It is an amenable number.

12313541 is a deficient number, since it is larger than the sum of its proper divisors (397243).

12313541 is an equidigital number, since it uses as much as digits as its factorization.

12313541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397242.

The product of its digits is 360, while the sum is 20.

The square root of 12313541 is about 3509.0655451274. The cubic root of 12313541 is about 230.9197012308.

Adding to 12313541 its reverse (14531321), we get a palindrome (26844862).

The spelling of 12313541 in words is "twelve million, three hundred thirteen thousand, five hundred forty-one".

Divisors: 1 31 397211 12313541