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230415213 = 3710972153
BaseRepresentation
bin11011011101111…
…01101101101101
3121001120022020210
431232331231231
5432441241323
634510333033
75465332320
oct1556755555
9531508223
10230415213
111090773a6
12651ba179
1338976282
142285c7b7
1515366293
hexdbbdb6d

230415213 has 8 divisors (see below), whose sum is σ = 351108928. Its totient is φ = 131665824.

The previous prime is 230415167. The next prime is 230415217. The reversal of 230415213 is 312514032.

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

It is not a de Polignac number, because 230415213 - 210 = 230414189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10972153 = 230415213 / (2 + 3 + 0 + 4 + 1 + 5 + 2 + 1 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230415213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230415217) 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, 5486056 + ... + 5486097.

It is an arithmetic number, because the mean of its divisors is an integer number (43888616).

Almost surely, 2230415213 is an apocalyptic number.

It is an amenable number.

230415213 is a deficient number, since it is larger than the sum of its proper divisors (120693715).

230415213 is a wasteful number, since it uses less digits than its factorization.

230415213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10972163.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 230415213 is about 15179.4338827243. The cubic root of 230415213 is about 613.0610385176.

Adding to 230415213 its reverse (312514032), we get a palindrome (542929245).

The spelling of 230415213 in words is "two hundred thirty million, four hundred fifteen thousand, two hundred thirteen".

Divisors: 1 3 7 21 10972153 32916459 76805071 230415213