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30361031 = 171993997
BaseRepresentation
bin111001111010…
…0010111000111
32010010111111122
41303310113013
530233023111
63002424155
7516031061
oct163642707
963114448
1030361031
1116157768
12a20205b
1363a040c
144064731
1529eacdb
hex1cf45c7

30361031 has 8 divisors (see below), whose sum is σ = 33839280. Its totient is φ = 27070848.

The previous prime is 30360991. The next prime is 30361073. The reversal of 30361031 is 13016303.

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

It is a cyclic number.

It is not a de Polignac number, because 30361031 - 214 = 30344647 is a prime.

It is a super-2 number, since 2×303610312 = 1843584406765922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30366031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46676 + ... + 47321.

It is an arithmetic number, because the mean of its divisors is an integer number (4229910).

Almost surely, 230361031 is an apocalyptic number.

30361031 is a deficient number, since it is larger than the sum of its proper divisors (3478249).

30361031 is a wasteful number, since it uses less digits than its factorization.

30361031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94033.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 30361031 is about 5510.0844821110. The cubic root of 30361031 is about 311.9647361799.

Adding to 30361031 its reverse (13016303), we get a palindrome (43377334).

The spelling of 30361031 in words is "thirty million, three hundred sixty-one thousand, thirty-one".

Divisors: 1 17 19 323 93997 1597949 1785943 30361031