Search a number
-
+
230237231 = 7219247301
BaseRepresentation
bin11011011100100…
…10010000101111
3121001020021002212
431232102100233
5432420042411
634502441035
75463661400
oct1556222057
9531207085
10230237231
11108a65704
126513317b
1338913263
14228139a7
151532d68b
hexdb9242f

230237231 has 12 divisors (see below), whose sum is σ = 281924280. Its totient is φ = 186958800.

The previous prime is 230237219. The next prime is 230237243. The reversal of 230237231 is 132732032.

It is an interprime number because it is at equal distance from previous prime (230237219) and next prime (230237243).

It is not a de Polignac number, because 230237231 - 214 = 230220847 is a prime.

It is a super-2 number, since 2×2302372312 = 106018365077094722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 230237197 and 230237206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230237201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122720 + ... + 124581.

It is an arithmetic number, because the mean of its divisors is an integer number (23493690).

Almost surely, 2230237231 is an apocalyptic number.

230237231 is a deficient number, since it is larger than the sum of its proper divisors (51687049).

230237231 is a wasteful number, since it uses less digits than its factorization.

230237231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247334 (or 247327 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 230237231 is about 15173.5701468046. The cubic root of 230237231 is about 612.9031468359.

Adding to 230237231 its reverse (132732032), we get a palindrome (362969263).

The spelling of 230237231 in words is "two hundred thirty million, two hundred thirty-seven thousand, two hundred thirty-one".

Divisors: 1 7 19 49 133 931 247301 1731107 4698719 12117749 32891033 230237231