Search a number
-
+
230121213 = 3710958153
BaseRepresentation
bin11011011011101…
…01111011111101
3121001000100221220
431231311323331
5432402334323
634500143553
75462666220
oct1555657375
9531010856
10230121213
11108996523
1265097bb9
13388a24ca
14227c35b7
15153090e3
hexdb75efd

230121213 has 8 divisors (see below), whose sum is σ = 350660928. Its totient is φ = 131497824.

The previous prime is 230121211. The next prime is 230121257. The reversal of 230121213 is 312121032.

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

It is not a de Polignac number, because 230121213 - 21 = 230121211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 230121192 and 230121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230121211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5479056 + ... + 5479097.

It is an arithmetic number, because the mean of its divisors is an integer number (43832616).

Almost surely, 2230121213 is an apocalyptic number.

It is an amenable number.

230121213 is a deficient number, since it is larger than the sum of its proper divisors (120539715).

230121213 is a wasteful number, since it uses less digits than its factorization.

230121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10958163.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 230121213 is about 15169.7466359857. The cubic root of 230121213 is about 612.8001809454.

Adding to 230121213 its reverse (312121032), we get a palindrome (542242245).

The spelling of 230121213 in words is "two hundred thirty million, one hundred twenty-one thousand, two hundred thirteen".

Divisors: 1 3 7 21 10958153 32874459 76707071 230121213