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30421113 = 310140371
BaseRepresentation
bin111010000001…
…1000001111001
32010020112220220
41310003001321
530241433423
63004010253
7516401202
oct164030171
963215826
1030421113
1116198918
12a230989
1363c1878
14407c5a9
152a0d9e3
hex1d03079

30421113 has 4 divisors (see below), whose sum is σ = 40561488. Its totient is φ = 20280740.

The previous prime is 30421051. The next prime is 30421117. The reversal of 30421113 is 31112403.

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 30421113 - 28 = 30420857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30421092 and 30421101.

It is not an unprimeable number, because it can be changed into a prime (30421117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5070183 + ... + 5070188.

It is an arithmetic number, because the mean of its divisors is an integer number (10140372).

Almost surely, 230421113 is an apocalyptic number.

It is an amenable number.

30421113 is a deficient number, since it is larger than the sum of its proper divisors (10140375).

30421113 is a wasteful number, since it uses less digits than its factorization.

30421113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140374.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 30421113 is about 5515.5337910306. The cubic root of 30421113 is about 312.1703848279.

Adding to 30421113 its reverse (31112403), we get a palindrome (61533516).

The spelling of 30421113 in words is "thirty million, four hundred twenty-one thousand, one hundred thirteen".

Divisors: 1 3 10140371 30421113