Search a number
-
+
230047147 = 1120913377
BaseRepresentation
bin11011011011000…
…11110110101011
3121000212121100201
431231203312223
5432343002042
634454413031
75462240251
oct1555436653
9530777321
10230047147
11108945910
1265061177
1338877895
14227a45d1
15152e21b7
hexdb63dab

230047147 has 4 divisors (see below), whose sum is σ = 250960536. Its totient is φ = 209133760.

The previous prime is 230047121. The next prime is 230047151. The reversal of 230047147 is 741740032.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 230047147 - 211 = 230045099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230047177) 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, 10456678 + ... + 10456699.

It is an arithmetic number, because the mean of its divisors is an integer number (62740134).

Almost surely, 2230047147 is an apocalyptic number.

230047147 is a deficient number, since it is larger than the sum of its proper divisors (20913389).

230047147 is a wasteful number, since it uses less digits than its factorization.

230047147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20913388.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 230047147 is about 15167.3051990128. The cubic root of 230047147 is about 612.7344293242.

Adding to 230047147 its reverse (741740032), we get a palindrome (971787179).

The spelling of 230047147 in words is "two hundred thirty million, forty-seven thousand, one hundred forty-seven".

Divisors: 1 11 20913377 230047147