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30318101 = 112756191
BaseRepresentation
bin111001110100…
…1111000010101
32010001022121122
41303221320111
530230134401
63001453325
7515461652
oct163517025
963038548
1030318101
1116128490
12a1a1245
136386a08
144052c29
1529dd21b
hex1ce9e15

30318101 has 4 divisors (see below), whose sum is σ = 33074304. Its totient is φ = 27561900.

The previous prime is 30318097. The next prime is 30318109. The reversal of 30318101 is 10181303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30318101 - 22 = 30318097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30318101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30318109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1378085 + ... + 1378106.

It is an arithmetic number, because the mean of its divisors is an integer number (8268576).

Almost surely, 230318101 is an apocalyptic number.

It is an amenable number.

30318101 is a deficient number, since it is larger than the sum of its proper divisors (2756203).

30318101 is a wasteful number, since it uses less digits than its factorization.

30318101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756202.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 30318101 is about 5506.1875195093. The cubic root of 30318101 is about 311.8176291486.

Adding to 30318101 its reverse (10181303), we get a palindrome (40499404).

The spelling of 30318101 in words is "thirty million, three hundred eighteen thousand, one hundred one".

Divisors: 1 11 2756191 30318101