Search a number
-
+
230121413 = 1972295101
BaseRepresentation
bin11011011011101…
…01111111000101
3121001000101020022
431231311333011
5432402341123
634500144525
75462666624
oct1555657705
9531011208
10230121413
11108996695
1265098145
13388a2622
14227c36bb
15153091c8
hexdb75fc5

230121413 has 8 divisors (see below), whose sum is σ = 232345080. Its totient is φ = 227908800.

The previous prime is 230121403. The next prime is 230121431. The reversal of 230121413 is 314121032.

It can be written as a sum of positive squares in 4 ways, for example, as 71537764 + 158583649 = 8458^2 + 12593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230121413 - 210 = 230120389 is a prime.

It is a super-2 number, since 2×2301214132 = 105911729442233138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230121391 and 230121400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230121403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42563 + ... + 47663.

It is an arithmetic number, because the mean of its divisors is an integer number (29043135).

Almost surely, 2230121413 is an apocalyptic number.

It is an amenable number.

230121413 is a deficient number, since it is larger than the sum of its proper divisors (2223667).

230121413 is a wasteful number, since it uses less digits than its factorization.

230121413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527.

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

The square root of 230121413 is about 15169.7532280522. The cubic root of 230121413 is about 612.8003584750.

Adding to 230121413 its reverse (314121032), we get a palindrome (544242445).

The spelling of 230121413 in words is "two hundred thirty million, one hundred twenty-one thousand, four hundred thirteen".

Divisors: 1 197 229 5101 45113 1004897 1168129 230121413