Search a number
-
+
12010231 = 16997069
BaseRepresentation
bin101101110100…
…001011110111
3211121011221101
4231310023313
511033311411
61105230531
7204041152
oct55641367
924534841
1012010231
116863512
124032447
13264685c
141848c99
1510c38c1
hexb742f7

12010231 has 4 divisors (see below), whose sum is σ = 12019000. Its totient is φ = 12001464.

The previous prime is 12010199. The next prime is 12010241. The reversal of 12010231 is 13201021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13201021 = 97136093.

It is a cyclic number.

It is not a de Polignac number, because 12010231 - 25 = 12010199 is a prime.

It is a super-2 number, since 2×120102312 = 288491297346722, which contains 22 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 (12010241) 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, 1836 + ... + 5233.

It is an arithmetic number, because the mean of its divisors is an integer number (3004750).

Almost surely, 212010231 is an apocalyptic number.

12010231 is a deficient number, since it is larger than the sum of its proper divisors (8769).

12010231 is an equidigital number, since it uses as much as digits as its factorization.

12010231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8768.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12010231 is about 3465.5780181667. The cubic root of 12010231 is about 229.0078943142.

Adding to 12010231 its reverse (13201021), we get a palindrome (25211252).

The spelling of 12010231 in words is "twelve million, ten thousand, two hundred thirty-one".

Divisors: 1 1699 7069 12010231