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BaseRepresentation
bin111010011000…
…0110000101111
32010121001212121
41310300300233
530313432211
63012013411
7521111260
oct164606057
963531777
1030608431
1116306627
12a301267
136458bc9
1440ca967
152a49271
hex1d30c2f

30608431 has 8 divisors (see below), whose sum is σ = 35106944. Its totient is φ = 26141400.

The previous prime is 30608429. The next prime is 30608441. The reversal of 30608431 is 13480603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30608431 - 21 = 30608429 is a prime.

It is a super-2 number, since 2×306084312 = 1873752096563522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30608396 and 30608405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30608441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5745 + ... + 9706.

It is an arithmetic number, because the mean of its divisors is an integer number (4388368).

Almost surely, 230608431 is an apocalyptic number.

30608431 is a deficient number, since it is larger than the sum of its proper divisors (4498513).

30608431 is a wasteful number, since it uses less digits than its factorization.

30608431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15741.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 30608431 is about 5532.4886805126. The cubic root of 30608431 is about 312.8098039141.

The spelling of 30608431 in words is "thirty million, six hundred eight thousand, four hundred thirty-one".

Divisors: 1 7 283 1981 15451 108157 4372633 30608431