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31114245 = 352971527
BaseRepresentation
bin111011010110…
…0010000000101
32011112202201110
41312230100011
530431123440
63030515233
7525316041
oct166542005
964482643
1031114245
1116621658
12a505b19
1365a51c6
1441bd021
152ae9080
hex1dac405

31114245 has 16 divisors (see below), whose sum is σ = 51500160. Its totient is φ = 16021824.

The previous prime is 31114189. The next prime is 31114249. The reversal of 31114245 is 54241113.

31114245 = T2625 + T2626 + ... + T2633.

It is not a de Polignac number, because 31114245 - 210 = 31113221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31114249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35329 + ... + 36198.

It is an arithmetic number, because the mean of its divisors is an integer number (3218760).

Almost surely, 231114245 is an apocalyptic number.

It is an amenable number.

31114245 is a deficient number, since it is larger than the sum of its proper divisors (20385915).

31114245 is a wasteful number, since it uses less digits than its factorization.

31114245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71564.

The product of its digits is 480, while the sum is 21.

The square root of 31114245 is about 5578.0144316773. The cubic root of 31114245 is about 314.5234921871.

Adding to 31114245 its reverse (54241113), we get a palindrome (85355358).

The spelling of 31114245 in words is "thirty-one million, one hundred fourteen thousand, two hundred forty-five".

Divisors: 1 3 5 15 29 87 145 435 71527 214581 357635 1072905 2074283 6222849 10371415 31114245