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11312423 = 87712899
BaseRepresentation
bin101011001001…
…110100100111
3210021201201122
4223021310213
510343444143
61042244155
7165103553
oct53116447
923251648
1011312423
116427211
12395665b
132461055
141706863
15ed6c68
hexac9d27

11312423 has 4 divisors (see below), whose sum is σ = 11326200. Its totient is φ = 11298648.

The previous prime is 11312393. The next prime is 11312443. The reversal of 11312423 is 32421311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32421311 = 132493947.

It is a cyclic number.

It is not a de Polignac number, because 11312423 - 222 = 7118119 is a prime.

It is a super-3 number, since 3×113124233 (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5573 + ... + 7326.

It is an arithmetic number, because the mean of its divisors is an integer number (2831550).

Almost surely, 211312423 is an apocalyptic number.

11312423 is a deficient number, since it is larger than the sum of its proper divisors (13777).

11312423 is an equidigital number, since it uses as much as digits as its factorization.

11312423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13776.

The product of its digits is 144, while the sum is 17.

The square root of 11312423 is about 3363.3945650191. The cubic root of 11312423 is about 224.4839068297.

Adding to 11312423 its reverse (32421311), we get a palindrome (43733734).

The spelling of 11312423 in words is "eleven million, three hundred twelve thousand, four hundred twenty-three".

Divisors: 1 877 12899 11312423