Search a number
-
+
230220013 = 1451158663
BaseRepresentation
bin11011011100011…
…10000011101101
3121001012101111011
431232032003231
5432414020023
634502225221
75463560242
oct1556160355
9531171434
10230220013
11108a53781
1265125211
133890847a
142280b5c9
151532850d
hexdb8e0ed

230220013 has 4 divisors (see below), whose sum is σ = 230380128. Its totient is φ = 230059900.

The previous prime is 230220007. The next prime is 230220019. The reversal of 230220013 is 310022032.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (230220007) and next prime (230220019).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230220013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230219975 and 230220002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230220019) 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, 77881 + ... + 80782.

It is an arithmetic number, because the mean of its divisors is an integer number (57595032).

Almost surely, 2230220013 is an apocalyptic number.

It is an amenable number.

230220013 is a deficient number, since it is larger than the sum of its proper divisors (160115).

230220013 is a wasteful number, since it uses less digits than its factorization.

230220013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160114.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 230220013 is about 15173.0027680746. The cubic root of 230220013 is about 612.8878680596.

Adding to 230220013 its reverse (310022032), we get a palindrome (540242045).

The spelling of 230220013 in words is "two hundred thirty million, two hundred twenty thousand, thirteen".

Divisors: 1 1451 158663 230220013