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30343331421 = 3213259344713
BaseRepresentation
bin11100010000100110…
…100111111001011101
32220022200022221112200
4130100212213321131
5444120343101141
621534534522113
72122636030044
oct342046477135
986280287480
1030343331421
1111961024007
125a69b06339
132b27554ba0
14167bc9b55b
15bc8d46ab6
hex7109a7e5d

30343331421 has 12 divisors (see below), whose sum is σ = 47200737948. Its totient is φ = 18672819264.

The previous prime is 30343331413. The next prime is 30343331429. The reversal of 30343331421 is 12413334303.

30343331421 is a `hidden beast` number, since 3 + 0 + 343 + 3 + 314 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (30343331413) and next prime (30343331429).

It can be written as a sum of positive squares in 2 ways, for example, as 8523905625 + 21819425796 = 92325^2 + 147714^2 .

It is not a de Polignac number, because 30343331421 - 23 = 30343331413 is a prime.

It is a Curzon number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30343331429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129672240 + ... + 129672473.

It is an arithmetic number, because the mean of its divisors is an integer number (3933394829).

Almost surely, 230343331421 is an apocalyptic number.

It is an amenable number.

30343331421 is a deficient number, since it is larger than the sum of its proper divisors (16857406527).

30343331421 is a wasteful number, since it uses less digits than its factorization.

30343331421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259344732 (or 259344729 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 30343331421 its reverse (12413334303), we get a palindrome (42756665724).

The spelling of 30343331421 in words is "thirty billion, three hundred forty-three million, three hundred thirty-one thousand, four hundred twenty-one".

Divisors: 1 3 9 13 39 117 259344713 778034139 2334102417 3371481269 10114443807 30343331421