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30103541 = 132315657
BaseRepresentation
bin111001011010…
…1011111110101
32002122102021222
41302311133311
530201303131
62553120125
7513606266
oct162653765
962572258
1030103541
1115aa1266
12a0b9045
136310160
143dd896d
15299987b
hex1cb57f5

30103541 has 4 divisors (see below), whose sum is σ = 32419212. Its totient is φ = 27787872.

The previous prime is 30103517. The next prime is 30103571. The reversal of 30103541 is 14530103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5640625 + 24462916 = 2375^2 + 4946^2 .

It is a cyclic number.

It is not a de Polignac number, because 30103541 - 214 = 30087157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157816 + ... + 1157841.

It is an arithmetic number, because the mean of its divisors is an integer number (8104803).

Almost surely, 230103541 is an apocalyptic number.

It is an amenable number.

30103541 is a deficient number, since it is larger than the sum of its proper divisors (2315671).

30103541 is a wasteful number, since it uses less digits than its factorization.

30103541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315670.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30103541 is about 5486.6693904408. The cubic root of 30103541 is about 311.0803134149.

Adding to 30103541 its reverse (14530103), we get a palindrome (44633644).

The spelling of 30103541 in words is "thirty million, one hundred three thousand, five hundred forty-one".

Divisors: 1 13 2315657 30103541