Search a number
-
+
31444061 = 1113121821
BaseRepresentation
bin111011111110…
…0110001011101
32012011112010212
41313330301131
531022202221
63041542205
7531161435
oct167746135
965145125
1031444061
1116827430
12a644965
13668c36c
1442672c5
152b61b5b
hex1dfcc5d

31444061 has 8 divisors (see below), whose sum is σ = 34566048. Its totient is φ = 28366000.

The previous prime is 31444019. The next prime is 31444079. The reversal of 31444061 is 16044413.

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 31444061 - 210 = 31443037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444001) 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, 9470 + ... + 12351.

It is an arithmetic number, because the mean of its divisors is an integer number (4320756).

Almost surely, 231444061 is an apocalyptic number.

It is an amenable number.

31444061 is a deficient number, since it is larger than the sum of its proper divisors (3121987).

31444061 is a wasteful number, since it uses less digits than its factorization.

31444061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21963.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 31444061 is about 5607.5004235399. The cubic root of 31444061 is about 315.6309215763.

Adding to 31444061 its reverse (16044413), we get a palindrome (47488474).

The spelling of 31444061 in words is "thirty-one million, four hundred forty-four thousand, sixty-one".

Divisors: 1 11 131 1441 21821 240031 2858551 31444061