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30046342531 = 191581386449
BaseRepresentation
bin11011111110111001…
…101100110110000011
32212112222111100101011
4123332321230312003
5443013330430111
621445245221351
72112401461162
oct337671546603
985488440334
1030046342531
1111819416947
1259a6561857
132aaab6c80a
14165066d3d9
15bacc30021
hex6fee6cd83

30046342531 has 4 divisors (see below), whose sum is σ = 31627729000. Its totient is φ = 28464956064.

The previous prime is 30046342517. The next prime is 30046342549. The reversal of 30046342531 is 13524364003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30046342531 - 25 = 30046342499 is a prime.

It is a super-2 number, since 2×300463425312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30046342493 and 30046342502.

It is not an unprimeable number, because it can be changed into a prime (30046342511) 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, 790693206 + ... + 790693243.

It is an arithmetic number, because the mean of its divisors is an integer number (7906932250).

Almost surely, 230046342531 is an apocalyptic number.

30046342531 is a deficient number, since it is larger than the sum of its proper divisors (1581386469).

30046342531 is a wasteful number, since it uses less digits than its factorization.

30046342531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581386468.

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 30046342531 in words is "thirty billion, forty-six million, three hundred forty-two thousand, five hundred thirty-one".

Divisors: 1 19 1581386449 30046342531