Search a number
-
+
161230333 = 1119771437
BaseRepresentation
bin10011001110000…
…10110111111101
3102020101100102211
421213002313331
5312233332313
623555420421
73665302165
oct1147026775
9366340384
10161230333
1183012810
1245bb4711
1327531784
14175ad5a5
15e24be3d
hex99c2dfd

161230333 has 8 divisors (see below), whose sum is σ = 185145120. Its totient is φ = 138858480.

The previous prime is 161230319. The next prime is 161230357. The reversal of 161230333 is 333032161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-161230333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161230313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385510 + ... + 385927.

It is an arithmetic number, because the mean of its divisors is an integer number (23143140).

Almost surely, 2161230333 is an apocalyptic number.

It is an amenable number.

161230333 is a deficient number, since it is larger than the sum of its proper divisors (23914787).

161230333 is a wasteful number, since it uses less digits than its factorization.

161230333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771467.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 161230333 is about 12697.6506882179. The cubic root of 161230333 is about 544.2714874080.

Adding to 161230333 its reverse (333032161), we get a palindrome (494262494).

The spelling of 161230333 in words is "one hundred sixty-one million, two hundred thirty thousand, three hundred thirty-three".

Divisors: 1 11 19 209 771437 8485807 14657303 161230333