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31009054 = 217912031
BaseRepresentation
bin111011001001…
…0100100011110
32011100102102111
41312102210132
530414242204
63024344234
7524400256
oct166224436
964312374
1031009054
111655a61a
12a47507a
13656936b
144192966
152ac7d04
hex1d9291e

31009054 has 8 divisors (see below), whose sum is σ = 49249728. Its totient is φ = 14592480.

The previous prime is 31009031. The next prime is 31009067. The reversal of 31009054 is 45090013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×310090542 = 1923122859949832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455982 + ... + 456049.

It is an arithmetic number, because the mean of its divisors is an integer number (6156216).

Almost surely, 231009054 is an apocalyptic number.

31009054 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31009054 is a deficient number, since it is larger than the sum of its proper divisors (18240674).

31009054 is a wasteful number, since it uses less digits than its factorization.

31009054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912050.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 31009054 is about 5568.5773766735. The cubic root of 31009054 is about 314.1686451229.

Adding to 31009054 its reverse (45090013), we get a palindrome (76099067).

The spelling of 31009054 in words is "thirty-one million, nine thousand, fifty-four".

Divisors: 1 2 17 34 912031 1824062 15504527 31009054