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31230034 = 2111974713
BaseRepresentation
bin111011100100…
…0100001010010
32011202122112221
41313020201102
530443330114
63033211254
7526310443
oct167104122
964678487
1031230034
11166a0650
12a560b2a
136615b14
14420d2ca
152b1d524
hex1dc8852

31230034 has 16 divisors (see below), whose sum is σ = 53794080. Its totient is φ = 13448160.

The previous prime is 31230029. The next prime is 31230049. The reversal of 31230034 is 43003213.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36939 + ... + 37774.

It is an arithmetic number, because the mean of its divisors is an integer number (3362130).

Almost surely, 231230034 is an apocalyptic number.

31230034 is a deficient number, since it is larger than the sum of its proper divisors (22564046).

31230034 is a wasteful number, since it uses less digits than its factorization.

31230034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74745.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 31230034 is about 5588.3838450844. The cubic root of 31230034 is about 314.9131666258.

Adding to 31230034 its reverse (43003213), we get a palindrome (74233247).

The spelling of 31230034 in words is "thirty-one million, two hundred thirty thousand, thirty-four".

Divisors: 1 2 11 19 22 38 209 418 74713 149426 821843 1419547 1643686 2839094 15615017 31230034