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30013203031 = 725391168863
BaseRepresentation
bin11011111100111011…
…010010001001010111
32212110200010200112021
4123330323102021113
5442431334444111
621442103034011
72111520005440
oct337473221127
985420120467
1030013203031
1111801741729
12599743b907
132aa4038846
14164a0c42c7
15ba9d85d71
hex6fced2257

30013203031 has 8 divisors (see below), whose sum is σ = 34302357504. Its totient is φ = 25724437080.

The previous prime is 30013203007. The next prime is 30013203037. The reversal of 30013203031 is 13030231003.

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 30013203031 - 27 = 30013202903 is a prime.

It is a super-2 number, since 2×300132030312 (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 = 30013202996 and 30013203014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013203037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93306 + ... + 262168.

It is an arithmetic number, because the mean of its divisors is an integer number (4287794688).

Almost surely, 230013203031 is an apocalyptic number.

30013203031 is a deficient number, since it is larger than the sum of its proper divisors (4289154473).

30013203031 is a wasteful number, since it uses less digits than its factorization.

30013203031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194261.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 30013203031 its reverse (13030231003), we get a palindrome (43043434034).

The spelling of 30013203031 in words is "thirty billion, thirteen million, two hundred three thousand, thirty-one".

Divisors: 1 7 25391 168863 177737 1182041 4287600433 30013203031