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30421541213 = 74345934459
BaseRepresentation
bin11100010101010000…
…111110000101011101
32220112010111102012122
4130111100332011131
5444300403304323
621550411112325
72124605555660
oct342520760535
986463442178
1030421541213
11119a11921a8
125a901426a5
132b3a80947b
1416884196d7
15bd0b44ec8
hex71543e15d

30421541213 has 4 divisors (see below), whose sum is σ = 34767475680. Its totient is φ = 26075606748.

The previous prime is 30421541177. The next prime is 30421541239. The reversal of 30421541213 is 31214512403.

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 30421541213 - 26 = 30421541149 is a prime.

It is a super-2 number, since 2×304215412132 (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30421543213) 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, 2172967223 + ... + 2172967236.

It is an arithmetic number, because the mean of its divisors is an integer number (8691868920).

Almost surely, 230421541213 is an apocalyptic number.

It is an amenable number.

30421541213 is a deficient number, since it is larger than the sum of its proper divisors (4345934467).

30421541213 is an equidigital number, since it uses as much as digits as its factorization.

30421541213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345934466.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 30421541213 in words is "thirty billion, four hundred twenty-one million, five hundred forty-one thousand, two hundred thirteen".

Divisors: 1 7 4345934459 30421541213