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31010030 = 2510130703
BaseRepresentation
bin111011001001…
…0110011101110
32011100110202122
41312102303232
530414310110
63024352542
7524403152
oct166226356
964313678
1031010030
1116560327
12a475752
13656993c
144193062
152ac8255
hex1d92cee

31010030 has 16 divisors (see below), whose sum is σ = 56372544. Its totient is φ = 12280800.

The previous prime is 31010017. The next prime is 31010041. The reversal of 31010030 is 3001013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14342 + ... + 16361.

It is an arithmetic number, because the mean of its divisors is an integer number (3523284).

Almost surely, 231010030 is an apocalyptic number.

31010030 is a deficient number, since it is larger than the sum of its proper divisors (25362514).

31010030 is a wasteful number, since it uses less digits than its factorization.

31010030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30811.

The product of its (nonzero) digits is 9, while the sum is 8.

The square root of 31010030 is about 5568.6650105748. The cubic root of 31010030 is about 314.1719412073.

Adding to 31010030 its reverse (3001013), we get a palindrome (34011043).

The spelling of 31010030 in words is "thirty-one million, ten thousand, thirty".

Divisors: 1 2 5 10 101 202 505 1010 30703 61406 153515 307030 3101003 6202006 15505015 31010030