Search a number
-
+
11831069 = 83142543
BaseRepresentation
bin101101001000…
…011100011101
3211021002011202
4231020130131
511012043234
61101325245
7202363625
oct55103435
924232152
1011831069
116750948
123b66825
1325b3143
1417dd885
15108a77e
hexb4871d

11831069 has 4 divisors (see below), whose sum is σ = 11973696. Its totient is φ = 11688444.

The previous prime is 11831033. The next prime is 11831077. The reversal of 11831069 is 96013811.

It is a happy number.

11831069 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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: 96013811 = 167574933.

It is a cyclic number.

It is not a de Polignac number, because 11831069 - 28 = 11830813 is a prime.

It is a super-2 number, since 2×118310692 = 279948387365522, which contains 22 as substring.

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 (11831089) 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, 71189 + ... + 71354.

It is an arithmetic number, because the mean of its divisors is an integer number (2993424).

Almost surely, 211831069 is an apocalyptic number.

It is an amenable number.

11831069 is a deficient number, since it is larger than the sum of its proper divisors (142627).

11831069 is an equidigital number, since it uses as much as digits as its factorization.

11831069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142626.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 11831069 is about 3439.6321024203. The cubic root of 11831069 is about 227.8634467538.

The spelling of 11831069 in words is "eleven million, eight hundred thirty-one thousand, sixty-nine".

Divisors: 1 83 142543 11831069