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30101331 = 3137397109
BaseRepresentation
bin111001011010…
…0111101010011
32002122022021010
41302310331103
530201220311
62553102003
7513566661
oct162647523
962568233
1030101331
1115a9a637
12a0b7903
13630c150
143dd7c31
152998da6
hex1cb4f53

30101331 has 32 divisors (see below), whose sum is σ = 44672320. Its totient is φ = 17915904.

The previous prime is 30101329. The next prime is 30101353. The reversal of 30101331 is 13310103.

It is not a de Polignac number, because 30101331 - 21 = 30101329 is a prime.

It is a super-2 number, since 2×301013312 = 1812180255943122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30101321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276105 + ... + 276213.

It is an arithmetic number, because the mean of its divisors is an integer number (1396010).

Almost surely, 230101331 is an apocalyptic number.

30101331 is a deficient number, since it is larger than the sum of its proper divisors (14570989).

30101331 is a wasteful number, since it uses less digits than its factorization.

30101331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295.

The product of its (nonzero) digits is 27, while the sum is 12.

The square root of 30101331 is about 5486.4679895175. The cubic root of 30101331 is about 311.0727007521.

Adding to 30101331 its reverse (13310103), we get a palindrome (43411434).

The spelling of 30101331 in words is "thirty million, one hundred one thousand, three hundred thirty-one".

Divisors: 1 3 13 39 73 97 109 219 291 327 949 1261 1417 2847 3783 4251 7081 7957 10573 21243 23871 31719 92053 103441 137449 276159 310323 412347 771829 2315487 10033777 30101331