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300030431 = 319678401
BaseRepresentation
bin10001111000100…
…001100111011111
3202220120010101012
4101320201213133
51103301433211
645434405435
710302134201
oct2170414737
9686503335
10300030431
111443a5338
128459087b
134a20b8cc
142bbc0771
151b517d8b
hex11e219df

300030431 has 4 divisors (see below), whose sum is σ = 309708864. Its totient is φ = 290352000.

The previous prime is 300030413. The next prime is 300030551. The reversal of 300030431 is 134030003.

300030431 = 30962 + 30972 + ... + 31262.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-300030431 is a prime.

It is a super-2 number, since 2×3000304312 = 180036519052091522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300030931) 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, 4839170 + ... + 4839231.

It is an arithmetic number, because the mean of its divisors is an integer number (77427216).

Almost surely, 2300030431 is an apocalyptic number.

300030431 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

300030431 is a deficient number, since it is larger than the sum of its proper divisors (9678433).

300030431 is an equidigital number, since it uses as much as digits as its factorization.

300030431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9678432.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 300030431 is about 17321.3865207148. The cubic root of 300030431 is about 669.4555843325.

Adding to 300030431 its reverse (134030003), we get a palindrome (434060434).

The spelling of 300030431 in words is "three hundred million, thirty thousand, four hundred thirty-one".

Divisors: 1 31 9678401 300030431