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300123031 = 13192694517
BaseRepresentation
bin10001111000111…
…000001110010111
3202220201211101211
4101320320032113
51103312414111
645440402251
710303001155
oct2170701627
9686654354
10300123031
1114445896a
1284616387
134a241ac0
142bc063d5
151b535521
hex11e38397

300123031 has 16 divisors (see below), whose sum is σ = 341560800. Its totient is φ = 261422208.

The previous prime is 300123017. The next prime is 300123073. The reversal of 300123031 is 130321003.

It is a cyclic number.

It is not a de Polignac number, because 300123031 - 217 = 299991959 is a prime.

It is a super-2 number, since 2×3001230312 = 180147667473253922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300123091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64185 + ... + 68701.

It is an arithmetic number, because the mean of its divisors is an integer number (21347550).

Almost surely, 2300123031 is an apocalyptic number.

300123031 is a deficient number, since it is larger than the sum of its proper divisors (41437769).

300123031 is a wasteful number, since it uses less digits than its factorization.

300123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4818.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 300123031 is about 17324.0593106812. The cubic root of 300123031 is about 669.5244498033.

Adding to 300123031 its reverse (130321003), we get a palindrome (430444034).

The spelling of 300123031 in words is "three hundred million, one hundred twenty-three thousand, thirty-one".

Divisors: 1 13 19 247 269 3497 4517 5111 58721 66443 85823 1115699 1215073 15795949 23086387 300123031