Search a number
-
+
303030031 = 1934134673
BaseRepresentation
bin10010000011111…
…101111100001111
3210010012112001111
4102003331330033
51110033430111
650022552451
710336466323
oct2203757417
9703175044
10303030031
11146063a47
1285598727
134aa1c015
142c361983
151b90ba21
hex120fdf0f

303030031 has 8 divisors (see below), whose sum is σ = 319140720. Its totient is φ = 286935552.

The previous prime is 303030029. The next prime is 303030043. The reversal of 303030031 is 130030303.

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

It is a cyclic number.

It is not a de Polignac number, because 303030031 - 21 = 303030029 is a prime.

It is a super-2 number, since 2×3030300312 = 183654399375721922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 303029993 and 303030020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303030061) 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, 62511 + ... + 67183.

It is an arithmetic number, because the mean of its divisors is an integer number (39892590).

Almost surely, 2303030031 is an apocalyptic number.

303030031 is a deficient number, since it is larger than the sum of its proper divisors (16110689).

303030031 is a wasteful number, since it uses less digits than its factorization.

303030031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8105.

The product of its (nonzero) digits is 81, while the sum is 13.

The square root of 303030031 is about 17407.7577820924. The cubic root of 303030031 is about 671.6791852251.

Adding to 303030031 its reverse (130030303), we get a palindrome (433060334).

The spelling of 303030031 in words is "three hundred three million, thirty thousand, thirty-one".

Divisors: 1 19 3413 4673 64847 88787 15948949 303030031