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30471113 = 231324831
BaseRepresentation
bin111010000111…
…1001111001001
32010100002111202
41310033033021
530300033423
63005033545
7520000031
oct164171711
963302452
1030471113
1116222442
12a2558b5
13640b55a
1440928c1
152a1d728
hex1d0f3c9

30471113 has 4 divisors (see below), whose sum is σ = 31795968. Its totient is φ = 29146260.

The previous prime is 30471107. The next prime is 30471151. The reversal of 30471113 is 31117403.

It is a happy number.

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 30471113 - 214 = 30454729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30471013) 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, 662393 + ... + 662438.

It is an arithmetic number, because the mean of its divisors is an integer number (7948992).

Almost surely, 230471113 is an apocalyptic number.

It is an amenable number.

30471113 is a deficient number, since it is larger than the sum of its proper divisors (1324855).

30471113 is a wasteful number, since it uses less digits than its factorization.

30471113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324854.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 30471113 is about 5520.0645829555. The cubic root of 30471113 is about 312.3413184782.

Adding to 30471113 its reverse (31117403), we get a palindrome (61588516).

It can be divided in two parts, 304 and 71113, that added together give a palindrome (71417).

The spelling of 30471113 in words is "thirty million, four hundred seventy-one thousand, one hundred thirteen".

Divisors: 1 23 1324831 30471113