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31149060 = 2235519151
BaseRepresentation
bin111011011010…
…0110000000100
32011121112110220
41312310300010
530433232220
63031344340
7525522405
oct166646004
964545426
1031149060
1116645828
12a5220b0
1365b7cc7
1441cb9ac
152b04540
hex1db4c04

31149060 has 24 divisors (see below), whose sum is σ = 87217536. Its totient is φ = 8306400.

The previous prime is 31149059. The next prime is 31149119. The reversal of 31149060 is 6094113.

It is a self number, because there is not a number n which added to its sum of digits gives 31149060.

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, 259516 + ... + 259635.

It is an arithmetic number, because the mean of its divisors is an integer number (3634064).

Almost surely, 231149060 is an apocalyptic number.

31149060 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31149060 is an abundant number, since it is smaller than the sum of its proper divisors (56068476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31149060 is a wasteful number, since it uses less digits than its factorization.

31149060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519163 (or 519161 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 31149060 is about 5581.1342933135. The cubic root of 31149060 is about 314.6407595216.

The spelling of 31149060 in words is "thirty-one million, one hundred forty-nine thousand, sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 519151 1038302 1557453 2076604 2595755 3114906 5191510 6229812 7787265 10383020 15574530 31149060