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11423161 = 19601219
BaseRepresentation
bin101011100100…
…110110111001
3210111100122001
4223210312321
510411020121
61044501001
7166044451
oct53446671
923440561
1011423161
1164a2432
1239aa761
13249c589
141734d61
151009991
hexae4db9

11423161 has 4 divisors (see below), whose sum is σ = 12024400. Its totient is φ = 10821924.

The previous prime is 11423149. The next prime is 11423173. The reversal of 11423161 is 16132411.

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 an interprime number because it is at equal distance from previous prime (11423149) and next prime (11423173).

It is a cyclic number.

It is not a de Polignac number, because 11423161 - 27 = 11423033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 601219 = 11423161 / (1 + 1 + 4 + 2 + 3 + 1 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11423101) 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, 300591 + ... + 300628.

It is an arithmetic number, because the mean of its divisors is an integer number (3006100).

Almost surely, 211423161 is an apocalyptic number.

11423161 is the 1512-nd centered decagonal number.

It is an amenable number.

11423161 is a deficient number, since it is larger than the sum of its proper divisors (601239).

11423161 is an equidigital number, since it uses as much as digits as its factorization.

11423161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601238.

The product of its digits is 144, while the sum is 19.

The square root of 11423161 is about 3379.8167110067. The cubic root of 11423161 is about 225.2140251564.

Adding to 11423161 its reverse (16132411), we get a palindrome (27555572).

The spelling of 11423161 in words is "eleven million, four hundred twenty-three thousand, one hundred sixty-one".

Divisors: 1 19 601219 11423161