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31114223 = 717325693
BaseRepresentation
bin111011010110…
…0001111101111
32011112202200122
41312230033233
530431123343
63030515155
7525316010
oct166541757
964482618
1031114223
1116621638
12a505abb
1365a51aa
1441bd007
152ae9068
hex1dac3ef

31114223 has 8 divisors (see below), whose sum is σ = 35766048. Its totient is φ = 26514144.

The previous prime is 31114189. The next prime is 31114249. The reversal of 31114223 is 32241113.

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 31114223 - 28 = 31113967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31114253) 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, 11636 + ... + 14057.

It is an arithmetic number, because the mean of its divisors is an integer number (4470756).

Almost surely, 231114223 is an apocalyptic number.

31114223 is a deficient number, since it is larger than the sum of its proper divisors (4651825).

31114223 is a wasteful number, since it uses less digits than its factorization.

31114223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25873.

The product of its digits is 144, while the sum is 17.

The square root of 31114223 is about 5578.0124596490. The cubic root of 31114223 is about 314.5234180568.

Adding to 31114223 its reverse (32241113), we get a palindrome (63355336).

The spelling of 31114223 in words is "thirty-one million, one hundred fourteen thousand, two hundred twenty-three".

Divisors: 1 7 173 1211 25693 179851 4444889 31114223